What should I do if the REDMI Watch 4 system upgrade fails?

1. If the Mi Fitness App or device prompts upgrade failure, please try to restart the device and upgrade again;
2. Place the watch on the charger, when the power is more than 20%, upgrade again;
3. Reset the watch, repair it and try to upgrade again;
4. Try to change another cell phone and try to upgrade after re-binding;
5. If the upgrade fails and the watch cannot be turned on, please contact after-sales service for processing.