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Firefox reset – all bookmarks lost

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Firefox suddenly reset to a fresh install state: only default bookmarks, my custom ones are gone. No sync enabled. No manual reset/refresh/reinstall done. Tried: Restore from backups (none recent), about:profiles (only new profile), checked bookmarkbackups folder (empty/old). Please help recover bookmarks if possible. What could cause this? Any recovery steps?

Firefox suddenly reset to a fresh install state: only default bookmarks, my custom ones are gone. No sync enabled. No manual reset/refresh/reinstall done. Tried: Restore from backups (none recent), about:profiles (only new profile), checked bookmarkbackups folder (empty/old). Please help recover bookmarks if possible. What could cause this? Any recovery steps?

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