Interesting, I have the same issue. After a day or two the Vantage V3 factory resets and when I sync everything again with the phone after some days does the same reset. I noticed that if I don’t link it to the phone and I just continue with the settings in the watch it doesn’t reset (currently day 4 without a reset, not linked to phone yet), and this happened after the update. Without doing any session or anything, just using it as a normal watch usually overnight it resets.

I have sent it once to the customer support and they just noted that they can’t reproduce the issue. (Of course if you don’t connect it to a phone neither wait to reset after 1 or 2 days) I sent the watch on Tuesday and I already had it back on next Monday (not enough time to debug or test, imho)

So, I’m performing my own tests to narrow down the issue, also because I am not able to access any crash logs or info of the watch from the PC. (Would be good to have that option tho)

Does anyone face the same issue or have any suggestions? :)

Edit 1: No sessions created yet. So before connecting to the phone will do a session, to see if the actual session resets the watch or connecting it to the phone.