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  • Hi! Quick question - while I've been working hard on the ID205 reverse engineering (and the nRF52840 is obviously nicer to have), I've had a lot of interest in watches with GPS and I'm coming back to the No.1 F5 and F7 watches as they're packed full of features.

    I just found a link to a firmware updater for it (which is actually just an APK file) and looked inside and found firmware that references SDK 7/8/9. That feels super old to me, but do you think it's a possibility that's what they're using?

    If so I guess OTA firmware updates could be a realistic option and I could just reflash the watches here?

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