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how to get old sync data

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i used the feature sync. Recently my computer deleted my firefox history data. Then i reinstalled the OS and now i can't recover the old data. How can i get the old sync data on exactly day which i didn't delete history data? If not, tell me another way to solve my problem. Thanks

i used the feature sync. Recently my computer deleted my firefox history data. Then i reinstalled the OS and now i can't recover the old data. How can i get the old sync data on exactly day which i didn't delete history data? If not, tell me another way to solve my problem. Thanks

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Thelordvampire, Currently Sync does not have a backup feature. Once the local data syncs up to the account server, the profile is merged. It is possible to try to attach the account to a new profile.

If you have a back up of the profile from a previous back up of the operating system this would be an option. I apologize for the inconvenience.