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Accessing previous revision of properly synced bookmarks?

I have synchronized bookmarks couple days ago for my friend and for some reason, they are no longer accessible. I believe they were replaced by another ones, because there are no longer fetching from server and it is crucial to retrieve these older bookmarks. We have tested them as they were synchronized and I am sure they were stored online for that time.

My question is how can I access older revision of bookmarks? Would it be possible at all or only most recent revision is available? In other words, do you keep track of older data or are those data wiped out as soon as they are modified (replaced) by client? I am not familiar with Sync API, but I could write Python, Java or C program if you can direct me as such.

I have synchronized bookmarks couple days ago for my friend and for some reason, they are no longer accessible. I believe they were replaced by another ones, because there are no longer fetching from server and it is crucial to retrieve these older bookmarks. We have tested them as they were synchronized and I am sure they were stored online for that time. My question is how can I access older revision of bookmarks? Would it be possible at all or only most recent revision is available? In other words, do you keep track of older data or are those data wiped out as soon as they are modified (replaced) by client? I am not familiar with Sync API, but I could write Python, Java or C program if you can direct me as such.

Modified by gszpetkowski

All Replies (3)

Sync provides no backups or older versions of the sync'd data, but each Firefox installation saves bookmark backups.

https://support.mozilla.org/en-US/kb/restore-bookmarks-from-backup-or-move-them#w_restoring-from-backups

Good idea not to think of Sync as "stored online" for Firefox data - outside of the Sync process there is no way to recover or access your data. Sync is not a "cloud" in the truest sense of a data storage "cloud".

You do can a check for problems with the places.sqlite database file (bookmarks, history) in the Firefox profile folder.

If you use Sync then best is to disconnect Sync (temporarily) while performing maintenance/repair efforts to the places.sqlite database.

the-edmeister said

Sync provides no backups or older versions of the sync'd data, but each Firefox installation saves bookmark backups.

Thank you for quick and clear answer. I would try to recover bookmark backups from past OS installation on hard drive.