After updating the firmware to 7.20, I have several problems:
1. Voice notifications do not work (I tried to change the system language - it did not help)
2. Heart rate measurement often does not work (you can restore the work by turning the watch on and off)
3. The clock incorrectly determines the floors passed (sitting in a chair, I can walk 100 floors)
4. The clock sometimes incorrectly determines the speed (the difference can be twice)
I did a full clock reset twice, but that didn't help. There were no such problems with the previous firmware of the clock. How to rollback firmware?
