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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@halemmerich
I would expect no more trouble than you get by normal updating. The backup only restores the files to the storage and does not touch the firmware. You can of course hit specific incompatibilities between firmware and app versions, but there is no generic problem with restoring older apps onto newer firmware. Just update them as usual after restoring to prevent most problems.