What can be wrong?
Thanks a lot!
Best answer by tfarabaugh
A factory reset will not cause you to lose any data, the watch syncs when you first plug it in, so everything is saved on TomTom Sports and your settings are reset afterwards. All you lose is the wheel size in cycling and turning splits on & off in running, as these are watch settings, not user settings. The history is erased from the watch, but this clears itself every 10 activities anyway. The music is on a different drive that is untouched during a reset and TomTom Sports is not affected. The reset itself takes less than 5 minutes.
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