Hi thomas7121, I’m really sorry this happened — losing bookmarks after an update is extremely stressful. In most cases, Firefox does **not actually delete bookmarks during updates**. What usually happens is that they are still on your system, but Firefox is using a different profile or failed to load the correct data. '''What you can try (quick steps):''' * Open the address bar and type: `about:profiles` * Look for another profile listed there and click Launch profile * Check if your bookmarks appear in that profile * If you find them, click Set as default profile '''Also check:''' * Menu → Bookmarks → Manage bookmarks → Import and Backup → Restore * Try any available automatic backup date '''Important''' In most cases like this, the bookmarks are still on disk — they’re just tied to another Firefox profile created after the update. If none of the profiles or backups contain them, then unfortunately they may not be recoverable, but in a lot of cases the old profile is still there.