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How do you set up old sync using only a recovery key for Firefox 20.0?

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I have Sync set up on several computers. I apparently don't have an account for it, but DO have my old recovery key. How do I reset sync up on a computer that a tech erased and re-imaged?

I have Sync set up on several computers. I apparently don't have an account for it, but DO have my old recovery key. How do I reset sync up on a computer that a tech erased and re-imaged?

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Sorry, having just the old Recovery Key for Sync 1.1 won't do you any good. The account name and password was needed when Sync 1.1 was active. Currently Sync 1.1 is being shut down and "new" devices devoid of information can't be connected.

See this to learn how to backup your Firefox data from one of your other devices, and then restore that data to the one that was re-imaged. https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles