From 05cb3b8c0578c260a8a9d4259aff44578b081ef9 Mon Sep 17 00:00:00 2001
From: Egor <egor@philippov.ca>
Date: Sat, 29 Nov 2025 17:52:29 -0800
Subject: [PATCH] allow gerbil to work fully offline by allowing kcpp binary
 imports on the initial Download screen, more version -> backend renames

---
 package.json                                  |   8 +-
 src/components/App/UpdateAvailableModal.tsx   |   4 +-
 src/components/App/index.tsx                  |   6 +-
 src/components/DownloadCard.tsx               |  48 ++---
 src/components/screens/Download.tsx           | 176 +++++++++++-------
 src/components/settings/BackendsTab.tsx       |  26 +--
 src/hooks/useUpdateChecker.ts                 |   8 +-
 src/main/ipc.ts                               |   7 +-
 src/main/modules/koboldcpp/backend.ts         |  18 +-
 src/main/modules/koboldcpp/download.ts        | 152 +++++++++++----
 src/preload/index.ts                          |   5 +-
 .../{koboldVersions.ts => koboldBackends.ts}  |  23 +--
 src/types/electron.d.ts                       |   5 +-
 src/types/index.d.ts                          |   4 +-
 src/utils/assets.ts                           |  24 ++-
 yarn.lock                                     |  30 +--
 16 files changed, 346 insertions(+), 198 deletions(-)
 rename src/stores/{koboldVersions.ts => koboldBackends.ts} (90%)

diff --git a/package.json b/package.json
index 60836c8..802bd4d 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "gerbil",
   "productName": "Gerbil",
-  "version": "1.13.0",
+  "version": "1.14.0",
   "description": "Run Large Language Models locally",
   "main": "out/main/index.js",
   "homepage": "./",
@@ -60,7 +60,7 @@
     "eslint-plugin-sonarjs": "^3.0.5",
     "globals": "^16.5.0",
     "jiti": "^2.6.1",
-    "prettier": "^3.7.2",
+    "prettier": "^3.7.3",
     "rollup-plugin-visualizer": "^6.0.5",
     "typescript": "^5.9.3",
     "vite": "^7.2.4"
@@ -75,7 +75,7 @@
     "@mantine/hooks": "^8.3.9",
     "@uiw/react-codemirror": "^4.25.3",
     "electron-updater": "^6.6.2",
-    "execa": "^9.6.0",
+    "execa": "^9.6.1",
     "lucide-react": "^0.555.0",
     "mime-types": "^3.0.2",
     "react": "^19.2.0",
@@ -85,7 +85,7 @@
     "winston": "^3.18.3",
     "winston-daily-rotate-file": "^5.0.0",
     "yauzl": "^3.2.0",
-    "zustand": "^5.0.8"
+    "zustand": "^5.0.9"
   },
   "build": {
     "appId": "com.gerbil.app",
diff --git a/src/components/App/UpdateAvailableModal.tsx b/src/components/App/UpdateAvailableModal.tsx
index a37bb93..cd5b325 100644
--- a/src/components/App/UpdateAvailableModal.tsx
+++ b/src/components/App/UpdateAvailableModal.tsx
@@ -12,7 +12,7 @@ import { Download, X, ExternalLink } from 'lucide-react';
 import { useState } from 'react';
 import type { DownloadItem } from '@/types/electron';
 import type { BinaryUpdateInfo } from '@/hooks/useUpdateChecker';
-import { useKoboldVersionsStore } from '@/stores/koboldVersions';
+import { useKoboldBackendsStore } from '@/stores/koboldBackends';
 import { pretifyBinName } from '@/utils/assets';
 import { formatDownloadSize } from '@/utils/format';
 import { GITHUB_API } from '@/constants';
@@ -34,7 +34,7 @@ export const UpdateAvailableModal = ({
   updateInfo,
   onUpdate,
 }: UpdateAvailableModalProps) => {
-  const { downloading, downloadProgress } = useKoboldVersionsStore();
+  const { downloading, downloadProgress } = useKoboldBackendsStore();
   const currentBackend = updateInfo?.currentBackend;
   const availableUpdate = updateInfo?.availableUpdate;
   const [isUpdating, setIsUpdating] = useState(false);
diff --git a/src/components/App/index.tsx b/src/components/App/index.tsx
index b149254..dc198ca 100644
--- a/src/components/App/index.tsx
+++ b/src/components/App/index.tsx
@@ -15,7 +15,7 @@ import { ErrorBoundary } from '@/components/App/ErrorBoundary';
 import { AppRouter } from '@/components/App/Router';
 import { NotepadContainer } from '@/components/Notepad/Container';
 import { useUpdateChecker } from '@/hooks/useUpdateChecker';
-import { useKoboldVersionsStore } from '@/stores/koboldVersions';
+import { useKoboldBackendsStore } from '@/stores/koboldBackends';
 import { usePreferencesStore } from '@/stores/preferences';
 import { useLaunchConfigStore } from '@/stores/launchConfig';
 import { STATUSBAR_HEIGHT, TITLEBAR_HEIGHT } from '@/constants';
@@ -81,7 +81,7 @@ export const App = () => {
     closeModal,
   } = useUpdateChecker();
 
-  const { handleDownload, loadingRemote } = useKoboldVersionsStore();
+  const { handleDownload, loadingRemote } = useKoboldBackendsStore();
 
   const determineScreen = (
     currentVersion: unknown,
@@ -142,7 +142,7 @@ export const App = () => {
       item: download,
       isUpdate: true,
       wasCurrentBinary: true,
-      oldVersionPath: currentBackend?.path,
+      oldBackendPath: currentBackend?.path,
     });
 
     closeModal();
diff --git a/src/components/DownloadCard.tsx b/src/components/DownloadCard.tsx
index 49c3d6b..75387ce 100644
--- a/src/components/DownloadCard.tsx
+++ b/src/components/DownloadCard.tsx
@@ -13,11 +13,11 @@ import { Download, Trash2 } from 'lucide-react';
 import { MouseEvent } from 'react';
 import { pretifyBinName, isWindowsROCmBuild } from '@/utils/assets';
 import { usePreferencesStore } from '@/stores/preferences';
-import { useKoboldVersionsStore } from '@/stores/koboldVersions';
-import type { VersionInfo } from '@/types';
+import { useKoboldBackendsStore } from '@/stores/koboldBackends';
+import type { BackendInfo } from '@/types';
 
 interface DownloadCardProps {
-  version: VersionInfo;
+  backend: BackendInfo;
   size: string;
   description?: string;
   disabled?: boolean;
@@ -29,7 +29,7 @@ interface DownloadCardProps {
 }
 
 export const DownloadCard = ({
-  version: versionInfo,
+  backend,
   size,
   description,
   disabled = false,
@@ -40,23 +40,23 @@ export const DownloadCard = ({
   onDelete,
 }: DownloadCardProps) => {
   const { resolvedColorScheme: colorScheme } = usePreferencesStore();
-  const { downloading, downloadProgress } = useKoboldVersionsStore();
+  const { downloading, downloadProgress } = useKoboldBackendsStore();
 
-  const isLoading = downloading === versionInfo.name;
+  const isLoading = downloading === backend.name;
   const currentProgress = isLoading
-    ? Math.min(downloadProgress[versionInfo.name], 100) || 0
+    ? Math.min(downloadProgress[backend.name], 100) || 0
     : 0;
   const hasVersionMismatch = Boolean(
-    versionInfo.version &&
-    versionInfo.actualVersion &&
-    versionInfo.version !== versionInfo.actualVersion
+    backend.version &&
+    backend.actualVersion &&
+    backend.version !== backend.actualVersion
   );
 
   // eslint-disable-next-line sonarjs/cognitive-complexity
   const renderActionButtons = () => {
     const buttons = [];
 
-    if (!versionInfo.isInstalled) {
+    if (!backend.isInstalled) {
       return (
         <Button
           key="download"
@@ -78,7 +78,7 @@ export const DownloadCard = ({
       );
     }
 
-    if (!versionInfo.isCurrent && onMakeCurrent) {
+    if (!backend.isCurrent && onMakeCurrent) {
       buttons.push(
         <Button
           key="makeCurrent"
@@ -92,7 +92,7 @@ export const DownloadCard = ({
       );
     }
 
-    if (versionInfo.hasUpdate && onUpdate) {
+    if (backend.hasUpdate && onUpdate) {
       buttons.push(
         <Button
           key="update"
@@ -110,7 +110,7 @@ export const DownloadCard = ({
             )
           }
         >
-          {isLoading ? 'Updating...' : `Update to ${versionInfo.newerVersion}`}
+          {isLoading ? 'Updating...' : `Update to ${backend.newerVersion}`}
         </Button>
       );
     }
@@ -138,7 +138,7 @@ export const DownloadCard = ({
       );
     }
 
-    if (onDelete && versionInfo.isInstalled && !versionInfo.isCurrent) {
+    if (onDelete && backend.isInstalled && !backend.isCurrent) {
       buttons.push(
         <Button
           key="delete"
@@ -169,7 +169,7 @@ export const DownloadCard = ({
       withBorder
       radius="sm"
       padding="sm"
-      {...(versionInfo.isCurrent && {
+      {...(backend.isCurrent && {
         bg: colorScheme === 'dark' ? 'dark.6' : 'gray.0',
         bd: `2px solid var(--mantine-color-${colorScheme === 'dark' ? 'blue-4' : 'blue-6'})`,
       })}
@@ -178,19 +178,19 @@ export const DownloadCard = ({
         <div style={{ flex: 1 }}>
           <Group gap="xs" align="center" mb="xs">
             <Text fw={500} size="sm">
-              {pretifyBinName(versionInfo.name)}
+              {pretifyBinName(backend.name)}
             </Text>
-            {versionInfo.isCurrent && (
+            {backend.isCurrent && (
               <Badge variant="light" color="blue" size="sm">
                 Current
               </Badge>
             )}
-            {versionInfo.hasUpdate && (
+            {backend.hasUpdate && (
               <Badge variant="light" color="orange" size="sm">
                 Update Available
               </Badge>
             )}
-            {isWindowsROCmBuild(versionInfo.name) && (
+            {isWindowsROCmBuild(backend.name) && (
               <Badge variant="light" color="yellow" size="sm">
                 Experimental
               </Badge>
@@ -202,13 +202,13 @@ export const DownloadCard = ({
             </Text>
           )}
           <Group gap="xs" align="center">
-            {versionInfo.version && (
+            {backend.version && (
               <Text size="xs" c="dimmed">
-                Version {versionInfo.version}
-                {hasVersionMismatch && versionInfo.actualVersion && (
+                Version {backend.version}
+                {hasVersionMismatch && backend.actualVersion && (
                   <span style={{ color: 'var(--mantine-color-red-6)' }}>
                     {' '}
-                    (actual: {versionInfo.actualVersion})
+                    (actual: {backend.actualVersion})
                   </span>
                 )}
               </Text>
diff --git a/src/components/screens/Download.tsx b/src/components/screens/Download.tsx
index ed55e70..46499da 100644
--- a/src/components/screens/Download.tsx
+++ b/src/components/screens/Download.tsx
@@ -1,10 +1,18 @@
 import { useState, useCallback, useRef, useEffect } from 'react';
-import { Card, Text, Title, Loader, Stack, Container } from '@mantine/core';
+import {
+  Card,
+  Text,
+  Title,
+  Loader,
+  Stack,
+  Container,
+  Anchor,
+} from '@mantine/core';
 import { DownloadCard } from '@/components/DownloadCard';
 import { getPlatformDisplayName } from '@/utils/platform';
 import { formatDownloadSize } from '@/utils/format';
 import { getAssetDescription } from '@/utils/assets';
-import { useKoboldVersionsStore } from '@/stores/koboldVersions';
+import { useKoboldBackendsStore } from '@/stores/koboldBackends';
 import type { DownloadItem } from '@/types/electron';
 
 interface DownloadScreenProps {
@@ -19,9 +27,11 @@ export const DownloadScreen = ({ onDownloadComplete }: DownloadScreenProps) => {
     loadingRemote,
     downloading,
     handleDownload: handleDownloadFromStore,
-  } = useKoboldVersionsStore();
+  } = useKoboldBackendsStore();
 
   const [downloadingAsset, setDownloadingAsset] = useState<string | null>(null);
+  const [importError, setImportError] = useState<string | null>(null);
+  const [importing, setImporting] = useState(false);
   const downloadingItemRef = useRef<HTMLDivElement>(null);
 
   const loading = loadingPlatform || loadingRemote;
@@ -56,75 +66,101 @@ export const DownloadScreen = ({ onDownloadComplete }: DownloadScreenProps) => {
 
   return (
     <Container size="sm" mt="md">
-      <Stack gap="xl">
-        <Card withBorder radius="md" shadow="sm">
-          <Stack gap="lg">
-            <Title order={3}>Select a Backend</Title>
+      <Card withBorder radius="md" shadow="sm">
+        <Stack gap="lg">
+          <Title order={3}>Select a Backend</Title>
 
-            {loading ? (
-              <Stack align="center" gap="md" py="xl">
-                <Loader color="blue" />
-                <Text c="dimmed">Preparing download options...</Text>
-              </Stack>
-            ) : (
-              <>
-                {availableDownloads.length > 0 ? (
-                  <Stack gap="sm">
-                    {availableDownloads.map((download) => {
-                      const isDownloading =
-                        Boolean(downloading) &&
-                        downloadingAsset === download.name;
+          {loading ? (
+            <Stack align="center" gap="md" py="xl">
+              <Loader color="blue" />
+              <Text c="dimmed">Preparing download options...</Text>
+            </Stack>
+          ) : (
+            <>
+              {availableDownloads.length > 0 ? (
+                <Stack gap="sm">
+                  {availableDownloads.map((download) => {
+                    const isDownloading =
+                      Boolean(downloading) &&
+                      downloadingAsset === download.name;
 
-                      return (
-                        <div
-                          key={download.name}
-                          ref={isDownloading ? downloadingItemRef : null}
-                        >
-                          <DownloadCard
-                            version={{
-                              name: download.name,
-                              version: download.version || '',
-                              size: download.size,
-                              isInstalled: false,
-                              isCurrent: false,
-                              downloadUrl: download.url,
-                              hasUpdate: false,
-                            }}
-                            size={formatDownloadSize(
-                              download.size,
-                              download.url
-                            )}
-                            description={getAssetDescription(download.name)}
-                            disabled={
-                              Boolean(downloading) &&
-                              downloadingAsset !== download.name
-                            }
-                            onDownload={(e) => {
-                              e.stopPropagation();
-                              handleDownload(download);
-                            }}
-                          />
-                        </div>
-                      );
-                    })}
-                  </Stack>
-                ) : (
-                  <Card withBorder p="md" bg="red.0" c="red.9">
-                    <Stack gap="xs">
-                      <Text fw={500}>No downloads available</Text>
-                      <Text size="sm">
-                        Unable to fetch downloads for your platform (
-                        {getPlatformDisplayName(platform)}). Please check your
-                        internet connection and try again.
-                      </Text>
-                    </Stack>
-                  </Card>
-                )}
-              </>
-            )}
-          </Stack>
-        </Card>
-      </Stack>
+                    return (
+                      <div
+                        key={download.name}
+                        ref={isDownloading ? downloadingItemRef : null}
+                      >
+                        <DownloadCard
+                          backend={{
+                            name: download.name,
+                            version: download.version || '',
+                            size: download.size,
+                            isInstalled: false,
+                            isCurrent: false,
+                            downloadUrl: download.url,
+                            hasUpdate: false,
+                          }}
+                          size={formatDownloadSize(download.size, download.url)}
+                          description={getAssetDescription(download.name)}
+                          disabled={
+                            importing ||
+                            (Boolean(downloading) &&
+                              downloadingAsset !== download.name)
+                          }
+                          onDownload={(e) => {
+                            e.stopPropagation();
+                            handleDownload(download);
+                          }}
+                        />
+                      </div>
+                    );
+                  })}
+                </Stack>
+              ) : (
+                <Text size="sm" c="dimmed" ta="center">
+                  Unable to fetch downloads for your platform (
+                  {getPlatformDisplayName(platform)}). Check your internet
+                  connection and try again.
+                </Text>
+              )}
+
+              {importError && (
+                <Text size="sm" c="red" ta="center">
+                  {importError}
+                </Text>
+              )}
+
+              <Text size="sm" c="dimmed" ta="center">
+                Already have a backend downloaded?{' '}
+                <Anchor
+                  component="button"
+                  type="button"
+                  size="sm"
+                  disabled={importing || Boolean(downloading)}
+                  onClick={async () => {
+                    setImportError(null);
+                    setImporting(true);
+
+                    try {
+                      const result =
+                        await window.electronAPI.kobold.importLocalBackend();
+
+                      if (result.success) {
+                        onDownloadComplete();
+                      } else if (result.error) {
+                        setImportError(result.error);
+                      }
+                    } finally {
+                      setImporting(false);
+                    }
+                  }}
+                >
+                  {importing ? 'Importing...' : 'Select a local file'}
+                </Anchor>
+              </Text>
+            </>
+          )}
+        </Stack>
+      </Card>
     </Container>
   );
 };
diff --git a/src/components/settings/BackendsTab.tsx b/src/components/settings/BackendsTab.tsx
index 9f08b78..ff3adc0 100644
--- a/src/components/settings/BackendsTab.tsx
+++ b/src/components/settings/BackendsTab.tsx
@@ -18,9 +18,9 @@ import {
 } from '@/utils/version';
 import { formatDownloadSize } from '@/utils/format';
 
-import { useKoboldVersionsStore } from '@/stores/koboldVersions';
+import { useKoboldBackendsStore } from '@/stores/koboldBackends';
 import type { InstalledBackend, ReleaseWithStatus } from '@/types/electron';
-import type { VersionInfo } from '@/types';
+import type { BackendInfo } from '@/types';
 
 export const BackendsTab = () => {
   const {
@@ -31,7 +31,7 @@ export const BackendsTab = () => {
     handleDownload: handleDownloadFromStore,
     getLatestReleaseWithDownloadStatus,
     initialize,
-  } = useKoboldVersionsStore();
+  } = useKoboldBackendsStore();
 
   const [installedBackends, setInstalledBackends] = useState<
     InstalledBackend[]
@@ -83,8 +83,8 @@ export const BackendsTab = () => {
     initialize,
   ]);
 
-  const allBackends = useMemo((): VersionInfo[] => {
-    const backends: VersionInfo[] = [];
+  const allBackends = useMemo((): BackendInfo[] => {
+    const backends: BackendInfo[] = [];
     const processedInstalled = new Set<string>();
 
     availableDownloads.forEach((download) => {
@@ -170,7 +170,7 @@ export const BackendsTab = () => {
     }
   }, [downloading]);
 
-  const handleDownload = async (backend: VersionInfo) => {
+  const handleDownload = async (backend: BackendInfo) => {
     const download = availableDownloads.find((d) => d.name === backend.name);
     if (!download) return;
 
@@ -183,7 +183,7 @@ export const BackendsTab = () => {
     await loadInstalledBackends();
   };
 
-  const handleUpdate = async (backend: VersionInfo) => {
+  const handleUpdate = async (backend: BackendInfo) => {
     const download = availableDownloads.find((d) => d.name === backend.name);
     if (!download) return;
 
@@ -191,13 +191,13 @@ export const BackendsTab = () => {
       item: download,
       isUpdate: true,
       wasCurrentBinary: backend.isCurrent,
-      oldVersionPath: backend.installedPath,
+      oldBackendPath: backend.installedPath,
     });
 
     await loadInstalledBackends();
   };
 
-  const handleRedownload = async (backend: VersionInfo) => {
+  const handleRedownload = async (backend: BackendInfo) => {
     const download = availableDownloads.find((d) => d.name === backend.name);
     if (!download) return;
 
@@ -205,13 +205,13 @@ export const BackendsTab = () => {
       item: download,
       isUpdate: true,
       wasCurrentBinary: backend.isCurrent,
-      oldVersionPath: backend.installedPath,
+      oldBackendPath: backend.installedPath,
     });
 
     await loadInstalledBackends();
   };
 
-  const handleDelete = async (backend: VersionInfo) => {
+  const handleDelete = async (backend: BackendInfo) => {
     if (!backend.installedPath || backend.isCurrent) return;
 
     const result = await window.electronAPI.kobold.deleteRelease(
@@ -222,7 +222,7 @@ export const BackendsTab = () => {
     }
   };
 
-  const makeCurrent = (backend: VersionInfo) => {
+  const makeCurrent = (backend: BackendInfo) => {
     if (!backend.installedPath) return;
 
     const targetBackend = installedBackends.find(
@@ -286,7 +286,7 @@ export const BackendsTab = () => {
             ref={isDownloading ? downloadingItemRef : null}
           >
             <DownloadCard
-              version={backend}
+              backend={backend}
               size={
                 backend.size
                   ? formatDownloadSize(backend.size, backend.downloadUrl)
diff --git a/src/hooks/useUpdateChecker.ts b/src/hooks/useUpdateChecker.ts
index 1f6d156..98d3936 100644
--- a/src/hooks/useUpdateChecker.ts
+++ b/src/hooks/useUpdateChecker.ts
@@ -4,7 +4,7 @@ import {
   compareVersions,
   stripAssetExtensions,
 } from '@/utils/version';
-import { useKoboldVersionsStore } from '@/stores/koboldVersions';
+import { useKoboldBackendsStore } from '@/stores/koboldBackends';
 import { getROCmDownload } from '@/utils/rocm';
 import type { InstalledBackend, DownloadItem } from '@/types/electron';
 import type { DismissedUpdate } from '@/types';
@@ -23,7 +23,7 @@ export const useUpdateChecker = () => {
   );
 
   const { availableDownloads: releases, loadingRemote } =
-    useKoboldVersionsStore();
+    useKoboldBackendsStore();
   useEffect(() => {
     const loadDismissedUpdates = async () => {
       const dismissed = (await window.electronAPI.config.get(
@@ -75,7 +75,7 @@ export const useUpdateChecker = () => {
       if (hasUpdate) {
         const isUpdateDismissed = dismissedUpdates.some(
           (dismissedUpdate) =>
-            dismissedUpdate.currentVersionPath === currentBackend.path &&
+            dismissedUpdate.currentBackendPath === currentBackend.path &&
             dismissedUpdate.targetVersion === matchingDownload.version
         );
 
@@ -95,7 +95,7 @@ export const useUpdateChecker = () => {
   const skipUpdate = useCallback(() => {
     if (updateInfo && updateInfo.availableUpdate.version) {
       const newDismissedUpdate: DismissedUpdate = {
-        currentVersionPath: updateInfo.currentBackend.path,
+        currentBackendPath: updateInfo.currentBackend.path,
         targetVersion: updateInfo.availableUpdate.version,
       };
 
diff --git a/src/main/ipc.ts b/src/main/ipc.ts
index a2c08fb..d7022f6 100644
--- a/src/main/ipc.ts
+++ b/src/main/ipc.ts
@@ -6,7 +6,10 @@ import {
   stopKoboldCpp,
   launchKoboldCppWithCustomFrontends,
 } from '@/main/modules/koboldcpp/launcher';
-import { downloadRelease } from '@/main/modules/koboldcpp/download';
+import {
+  downloadRelease,
+  importLocalBackend,
+} from '@/main/modules/koboldcpp/download';
 import {
   getInstalledBackends,
   getCurrentBackend,
@@ -160,6 +163,8 @@ export function setupIPCHandlers() {
     selectModelFile(title)
   );
 
+  ipcMain.handle('kobold:importLocalBackend', () => importLocalBackend());
+
   ipcMain.handle('kobold:getLocalModels', (_, paramType: string) =>
     getLocalModelsForType(
       paramType as Parameters<typeof getLocalModelsForType>[0]
diff --git a/src/main/modules/koboldcpp/backend.ts b/src/main/modules/koboldcpp/backend.ts
index aef5ec8..9a24497 100644
--- a/src/main/modules/koboldcpp/backend.ts
+++ b/src/main/modules/koboldcpp/backend.ts
@@ -13,16 +13,16 @@ import { logError } from '@/utils/node/logging';
 import { getLauncherPath } from '@/utils/node/path';
 import type { InstalledBackend } from '@/types/electron';
 
-const versionCache = new Map<
+const backendVersionCache = new Map<
   string,
   { version: string; actualVersion?: string } | null
 >();
 
-export function clearVersionCache(path?: string) {
+export function clearBackendVersionCache(path?: string) {
   if (path) {
-    versionCache.delete(path);
+    backendVersionCache.delete(path);
   } else {
-    versionCache.clear();
+    backendVersionCache.clear();
   }
 }
 
@@ -161,7 +161,7 @@ export async function deleteRelease(binaryPath: string) {
     if (await pathExists(releaseDir)) {
       await rm(releaseDir, { recursive: true, force: true });
 
-      clearVersionCache(binaryPath);
+      clearBackendVersionCache(binaryPath);
       sendToRenderer('versions-updated');
 
       return { success: true };
@@ -179,8 +179,8 @@ export async function getVersionFromBinary(launcherPath: string) {
       return null;
     }
 
-    if (versionCache.has(launcherPath)) {
-      return versionCache.get(launcherPath);
+    if (backendVersionCache.has(launcherPath)) {
+      return backendVersionCache.get(launcherPath);
     }
 
     let folderVersion: string | null = null;
@@ -224,10 +224,10 @@ export async function getVersionFromBinary(launcherPath: string) {
           : undefined,
     };
 
-    versionCache.set(launcherPath, result);
+    backendVersionCache.set(launcherPath, result);
     return result;
   } catch {
-    versionCache.set(launcherPath, null);
+    backendVersionCache.set(launcherPath, null);
     return null;
   }
 }
diff --git a/src/main/modules/koboldcpp/download.ts b/src/main/modules/koboldcpp/download.ts
index 223c4bc..418c1de 100644
--- a/src/main/modules/koboldcpp/download.ts
+++ b/src/main/modules/koboldcpp/download.ts
@@ -1,8 +1,9 @@
 import { createWriteStream } from 'fs';
-import { join } from 'path';
+import { join, basename } from 'path';
 import { platform } from 'process';
-import { rm, unlink, rename, mkdir, chmod } from 'fs/promises';
+import { rm, unlink, rename, mkdir, chmod, copyFile } from 'fs/promises';
 import { execa } from 'execa';
+import { dialog } from 'electron';
 
 import {
   getInstallDir,
@@ -15,7 +16,7 @@ import { pathExists } from '@/utils/node/fs';
 import { stripAssetExtensions } from '@/utils/version';
 import { getLauncherPath } from '@/utils/node/path';
 import type { DownloadReleaseOptions, GitHubAsset } from '@/types/electron';
-import { clearVersionCache } from './backend';
+import { clearBackendVersionCache, getVersionFromBinary } from './backend';
 
 async function removeDirectoryWithRetry(
   dirPath: string,
@@ -150,6 +151,59 @@ async function unpackKoboldCpp(packedPath: string, unpackDir: string) {
   }
 }
 
+interface InstallBackendOptions {
+  packedFilePath: string;
+  unpackedDirPath: string;
+  isUpdate?: boolean;
+  wasCurrentBinary?: boolean;
+  oldBackendPath?: string;
+  skipUnpackError?: boolean;
+  skipCleanup?: boolean;
+}
+
+async function installBackend({
+  packedFilePath,
+  unpackedDirPath,
+  isUpdate = false,
+  wasCurrentBinary = false,
+  oldBackendPath,
+  skipUnpackError = false,
+  skipCleanup = false,
+}: InstallBackendOptions) {
+  if (!skipCleanup && (await pathExists(unpackedDirPath))) {
+    await removeDirectoryWithRetry(unpackedDirPath);
+  }
+
+  await mkdir(unpackedDirPath, { recursive: true });
+
+  if (skipUnpackError) {
+    try {
+      await unpackKoboldCpp(packedFilePath, unpackedDirPath);
+    } catch {}
+  } else {
+    await unpackKoboldCpp(packedFilePath, unpackedDirPath);
+  }
+
+  const launcherPath = await setupLauncher(packedFilePath, unpackedDirPath);
+
+  clearBackendVersionCache(launcherPath);
+
+  if (oldBackendPath && isUpdate) {
+    const oldInstallDir = join(oldBackendPath, '..');
+    if (oldInstallDir !== unpackedDirPath) {
+      await removeDirectoryWithRetry(oldInstallDir);
+    }
+  }
+
+  if (!getCurrentKoboldBinary() || (isUpdate && wasCurrentBinary)) {
+    await setCurrentKoboldBinary(launcherPath);
+  }
+
+  sendToRenderer('versions-updated');
+
+  return launcherPath;
+}
+
 export async function downloadRelease(
   asset: GitHubAsset,
   options: DownloadReleaseOptions
@@ -162,39 +216,73 @@ export async function downloadRelease(
   const unpackedDirPath = join(getInstallDir(), folderName);
 
   try {
-    if (await pathExists(unpackedDirPath)) {
-      await removeDirectoryWithRetry(unpackedDirPath);
-    }
-
     await downloadFile(asset, tempPackedFilePath);
 
-    await unpackKoboldCpp(tempPackedFilePath, unpackedDirPath);
-
-    const launcherPath = await setupLauncher(
-      tempPackedFilePath,
-      unpackedDirPath
-    );
-
-    clearVersionCache(launcherPath);
-
-    if (options.oldVersionPath && options.isUpdate) {
-      const oldInstallDir = join(options.oldVersionPath, '..');
-
-      if (oldInstallDir !== unpackedDirPath) {
-        await removeDirectoryWithRetry(oldInstallDir);
-      }
-    }
-
-    if (
-      !getCurrentKoboldBinary() ||
-      (options.isUpdate && options.wasCurrentBinary)
-    ) {
-      await setCurrentKoboldBinary(launcherPath);
-    }
-
-    sendToRenderer('versions-updated');
+    await installBackend({
+      packedFilePath: tempPackedFilePath,
+      unpackedDirPath,
+      isUpdate: options.isUpdate,
+      wasCurrentBinary: options.wasCurrentBinary,
+      oldBackendPath: options.oldBackendPath,
+    });
   } catch (error) {
     logError('Failed to download or unpack binary:', error as Error);
     throw new Error('Failed to download or unpack binary');
   }
 }
+
+export async function importLocalBackend() {
+  const result = await dialog.showOpenDialog(getMainWindow(), {
+    title: 'Select Backend Executable',
+    filters:
+      platform === 'win32'
+        ? [
+            { name: 'Executable Files', extensions: ['exe'] },
+            { name: 'All Files', extensions: ['*'] },
+          ]
+        : [{ name: 'All Files', extensions: ['*'] }],
+    properties: ['openFile'],
+  });
+
+  if (result.canceled || result.filePaths.length === 0) {
+    return { success: false };
+  }
+
+  const selectedPath = result.filePaths[0];
+
+  try {
+    if (platform !== 'win32') {
+      await chmod(selectedPath, 0o755);
+    }
+
+    const backendVersion = await getVersionFromBinary(selectedPath);
+
+    if (!backendVersion || backendVersion.version === 'unknown') {
+      return {
+        success: false,
+        error:
+          'Invalid backend executable. Could not determine version information.',
+      };
+    }
+
+    const version = backendVersion.actualVersion || backendVersion.version;
+    const filename = basename(selectedPath);
+    const baseFilename = stripAssetExtensions(filename);
+    const folderName = `${baseFilename}-${version}`;
+    const installDir = join(getInstallDir(), folderName);
+    const packedFilePath = join(getInstallDir(), `${filename}.packed`);
+
+    await copyFile(selectedPath, packedFilePath);
+
+    await installBackend({
+      packedFilePath,
+      unpackedDirPath: installDir,
+      skipUnpackError: true,
+    });
+
+    return { success: true };
+  } catch (error) {
+    logError('Failed to import local backend:', error as Error);
+    return { success: false, error: (error as Error).message };
+  }
+}
diff --git a/src/preload/index.ts b/src/preload/index.ts
index b530106..95fb40c 100644
--- a/src/preload/index.ts
+++ b/src/preload/index.ts
@@ -18,8 +18,8 @@ import type {
 const koboldAPI: KoboldAPI = {
   getInstalledBackends: () => ipcRenderer.invoke('kobold:getInstalledBackends'),
   getCurrentBackend: () => ipcRenderer.invoke('kobold:getCurrentBackend'),
-  setCurrentBackend: (version) =>
-    ipcRenderer.invoke('kobold:setCurrentBackend', version),
+  setCurrentBackend: (backend) =>
+    ipcRenderer.invoke('kobold:setCurrentBackend', backend),
   getPlatform: () => ipcRenderer.invoke('kobold:getPlatform'),
   detectGPU: () => ipcRenderer.invoke('kobold:detectGPU'),
   detectCPU: () => ipcRenderer.invoke('kobold:detectCPU'),
@@ -53,6 +53,7 @@ const koboldAPI: KoboldAPI = {
     ipcRenderer.invoke('kobold:parseConfigFile', filePath),
   selectModelFile: (title) =>
     ipcRenderer.invoke('kobold:selectModelFile', title),
+  importLocalBackend: () => ipcRenderer.invoke('kobold:importLocalBackend'),
   getLocalModels: (paramType) =>
     ipcRenderer.invoke('kobold:getLocalModels', paramType),
   analyzeModel: (filePath) =>
diff --git a/src/stores/koboldVersions.ts b/src/stores/koboldBackends.ts
similarity index 90%
rename from src/stores/koboldVersions.ts
rename to src/stores/koboldBackends.ts
index 90f43b8..8416694 100644
--- a/src/stores/koboldVersions.ts
+++ b/src/stores/koboldBackends.ts
@@ -16,7 +16,7 @@ interface HandleDownloadParams {
   item: DownloadItem;
   isUpdate?: boolean;
   wasCurrentBinary?: boolean;
-  oldVersionPath?: string;
+  oldBackendPath?: string;
 }
 
 const transformReleaseToDownloadItems = (
@@ -48,7 +48,7 @@ const fetchLatestReleaseFromAPI = async (platform: string) => {
   return transformReleaseToDownloadItems(release, platform);
 };
 
-interface KoboldVersionsState {
+interface KoboldBackendsState {
   platform: string;
   availableDownloads: DownloadItem[];
   loadingPlatform: boolean;
@@ -61,7 +61,7 @@ interface KoboldVersionsState {
   getLatestReleaseWithDownloadStatus: () => Promise<ReleaseWithStatus | null>;
 }
 
-export const useKoboldVersionsStore = create<KoboldVersionsState>(
+export const useKoboldBackendsStore = create<KoboldBackendsState>(
   (set, get) => ({
     platform: '',
     availableDownloads: [],
@@ -101,7 +101,7 @@ export const useKoboldVersionsStore = create<KoboldVersionsState>(
         item,
         isUpdate = false,
         wasCurrentBinary = false,
-        oldVersionPath,
+        oldBackendPath,
       } = params;
       const { downloading } = get();
 
@@ -127,15 +127,16 @@ export const useKoboldVersionsStore = create<KoboldVersionsState>(
       await window.electronAPI.kobold.downloadRelease(asset, {
         isUpdate,
         wasCurrentBinary,
-        oldVersionPath,
+        oldBackendPath,
       });
 
       progressCleanup();
       set({ downloading: null, downloadProgress: {} });
     },
+
     getLatestReleaseWithDownloadStatus: async () =>
       safeExecute(async () => {
-        const [response, installedVersions] = await Promise.all([
+        const [response, installedBackends] = await Promise.all([
           fetch(GITHUB_API.LATEST_RELEASE_URL),
           window.electronAPI.kobold.getInstalledBackends(),
         ]);
@@ -147,9 +148,9 @@ export const useKoboldVersionsStore = create<KoboldVersionsState>(
 
         const availableAssets = latestRelease.assets.map(
           (asset: GitHubAsset) => {
-            const installedBackend = installedVersions.find(
-              (v: InstalledBackend) => {
-                const pathParts = v.path.split(/[/\\]/);
+            const installedBackend = installedBackends.find(
+              (b: InstalledBackend) => {
+                const pathParts = b.path.split(/[/\\]/);
                 const launcherIndex = pathParts.findIndex(
                   (part: string) =>
                     part === 'koboldcpp-launcher' ||
@@ -168,7 +169,7 @@ export const useKoboldVersionsStore = create<KoboldVersionsState>(
             return {
               asset,
               isDownloaded: !!installedBackend,
-              installedVersion: installedBackend?.version,
+              installedBackendVersion: installedBackend?.version,
             };
           }
         );
@@ -181,4 +182,4 @@ export const useKoboldVersionsStore = create<KoboldVersionsState>(
   })
 );
 
-useKoboldVersionsStore.getState().initialize();
+useKoboldBackendsStore.getState().initialize();
diff --git a/src/types/electron.d.ts b/src/types/electron.d.ts
index bd373df..6705cec 100644
--- a/src/types/electron.d.ts
+++ b/src/types/electron.d.ts
@@ -29,7 +29,7 @@ export interface GitHubAsset {
 export interface DownloadReleaseOptions {
   isUpdate?: boolean;
   wasCurrentBinary?: boolean;
-  oldVersionPath?: string;
+  oldBackendPath?: string;
 }
 
 export interface GitHubRelease {
@@ -53,7 +53,7 @@ export interface ReleaseWithStatus {
   availableAssets: {
     asset: GitHubAsset;
     isDownloaded: boolean;
-    installedVersion?: string;
+    installedBackendVersion?: string;
   }[];
 }
 
@@ -162,6 +162,7 @@ export interface KoboldAPI {
   setSelectedConfig: (configName: string) => Promise<boolean>;
   parseConfigFile: (filePath: string) => Promise<KoboldConfig | null>;
   selectModelFile: (title?: string) => Promise<string | null>;
+  importLocalBackend: () => Promise<{ success: boolean; error?: string }>;
   getLocalModels: (paramType: string) => Promise<CachedModel[]>;
   analyzeModel: (filePath: string) => Promise<ModelAnalysis>;
   calculateOptimalLayers: (
diff --git a/src/types/index.d.ts b/src/types/index.d.ts
index 7399e78..0b5dedd 100644
--- a/src/types/index.d.ts
+++ b/src/types/index.d.ts
@@ -66,7 +66,7 @@ export interface UpdateInfo {
   hasUpdate: boolean;
 }
 
-export interface VersionInfo {
+export interface BackendInfo {
   name: string;
   version: string;
   size?: number;
@@ -80,7 +80,7 @@ export interface VersionInfo {
 }
 
 export interface DismissedUpdate {
-  currentVersionPath: string;
+  currentBackendPath: string;
   targetVersion: string;
 }
 
diff --git a/src/utils/assets.ts b/src/utils/assets.ts
index a4cf3f5..74e7727 100644
--- a/src/utils/assets.ts
+++ b/src/utils/assets.ts
@@ -9,14 +9,22 @@ export const getAssetDescription = (assetName: string) => {
   }
 
   if (name.endsWith(ASSET_SUFFIXES.OLDPC)) {
-    return 'Meant for old PCs with outdated CPUs that may not work with the standard build. Does not support modern AVX2 CPU architectures or modern CUDA.';
+    return 'Meant for old PCs with outdated CPUs that may not work with the standard backend. Does not support modern AVX2 CPU architectures or modern CUDA.';
   }
 
   if (name.endsWith(ASSET_SUFFIXES.NOCUDA)) {
-    return 'Standard build with NVIDIA CUDA support removed for minimal file size.';
+    return 'Standard backend with NVIDIA CUDA support removed for minimal file size.';
   }
 
-  return "Standard build that's ideal for most cases.";
+  if (
+    name === 'koboldcpp-linux-x64' ||
+    name === 'koboldcpp-mac-arm64' ||
+    name === 'koboldcpp'
+  ) {
+    return "Standard backend that's ideal for most cases.";
+  }
+
+  return 'Custom backend.';
 };
 
 export const isWindowsROCmBuild = (assetName: string) => {
@@ -78,5 +86,13 @@ export const pretifyBinName = (binName: string) => {
     return 'No CUDA';
   }
 
-  return 'Standard';
+  if (
+    cleanName === 'koboldcpp-linux-x64' ||
+    cleanName === 'koboldcpp-mac-arm64' ||
+    cleanName === 'koboldcpp'
+  ) {
+    return 'Standard';
+  }
+
+  return cleanName;
 };
diff --git a/yarn.lock b/yarn.lock
index 7cf968e..e8d03d2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3358,9 +3358,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"execa@npm:^9.6.0":
-  version: 9.6.0
-  resolution: "execa@npm:9.6.0"
+"execa@npm:^9.6.1":
+  version: 9.6.1
+  resolution: "execa@npm:9.6.1"
   dependencies:
     "@sindresorhus/merge-streams": "npm:^4.0.0"
     cross-spawn: "npm:^7.0.6"
@@ -3374,7 +3374,7 @@ __metadata:
     signal-exit: "npm:^4.1.0"
     strip-final-newline: "npm:^4.0.0"
     yoctocolors: "npm:^2.1.1"
-  checksum: 10c0/2c44a33142f77d3a6a590a3b769b49b27029a76768593bac1f26fed4dd1330e9c189ee61eba6a8c990fb77e37286c68c7445472ebf24c22b31e9ff320e73d7ac
+  checksum: 10c0/636b36585306a3c8bc3a9d7b25d2d915fb06d8c9b9b02a804280d62562de3b34535affc1b7702b039320e0953daa6545a073f3c4b63fe974c1fe11336c56b467
   languageName: node
   linkType: hard
 
@@ -3731,12 +3731,12 @@ __metadata:
     eslint-plugin-react: "npm:^7.37.5"
     eslint-plugin-react-hooks: "npm:^7.0.1"
     eslint-plugin-sonarjs: "npm:^3.0.5"
-    execa: "npm:^9.6.0"
+    execa: "npm:^9.6.1"
     globals: "npm:^16.5.0"
     jiti: "npm:^2.6.1"
     lucide-react: "npm:^0.555.0"
     mime-types: "npm:^3.0.2"
-    prettier: "npm:^3.7.2"
+    prettier: "npm:^3.7.3"
     react: "npm:^19.2.0"
     react-dom: "npm:^19.2.0"
     react-error-boundary: "npm:^6.0.0"
@@ -3747,7 +3747,7 @@ __metadata:
     winston: "npm:^3.18.3"
     winston-daily-rotate-file: "npm:^5.0.0"
     yauzl: "npm:^3.2.0"
-    zustand: "npm:^5.0.8"
+    zustand: "npm:^5.0.9"
   languageName: unknown
   linkType: soft
 
@@ -5506,12 +5506,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"prettier@npm:^3.7.2":
-  version: 3.7.2
-  resolution: "prettier@npm:3.7.2"
+"prettier@npm:^3.7.3":
+  version: 3.7.3
+  resolution: "prettier@npm:3.7.3"
   bin:
     prettier: bin/prettier.cjs
-  checksum: 10c0/df3d658df301face0918f8ecbd4354f32e1151d83a3a4720c7f252342baf631466568f708e0e57beea55bbc56415c40208adc76a91d5f1a88f3e743d0d775dc0
+  checksum: 10c0/ee86bb06121c74dadc54f30b6f99aff6288966d9b842ce501d6991e20d20c6ce2d45028651b3b0955ca6e5fa89c1bee1e72b6f810243a93cef8bc69737972ef7
   languageName: node
   linkType: hard
 
@@ -7308,9 +7308,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"zustand@npm:^5.0.8":
-  version: 5.0.8
-  resolution: "zustand@npm:5.0.8"
+"zustand@npm:^5.0.9":
+  version: 5.0.9
+  resolution: "zustand@npm:5.0.9"
   peerDependencies:
     "@types/react": ">=18.0.0"
     immer: ">=9.0.6"
@@ -7325,6 +7325,6 @@ __metadata:
       optional: true
     use-sync-external-store:
       optional: true
-  checksum: 10c0/e865a6f7f1c0e03571701db5904151aaa7acefd6f85541a117085e129bf16e8f60b11f8cc82f277472de5c7ad5dcb201e1b0a89035ea0b40c9d9aab3cd24c8ad
+  checksum: 10c0/552849e4546c7760704d6509a5c412d57c62a1fa9e53169c939ba5e3d75f8cb3df50a64c3a22e6c3f1c8cc00de7543e4edd61ab5ae0c9169ba9a98e28303aba6
   languageName: node
   linkType: hard