1. If the app or wearable device prompts that the upgrade failed, please try to restart the wearable device and upgrade again;
2. Put the watch on the charger and upgrade it when the power of the watch is more than 50%;
3. Reset the watch, pair again, and then try to upgrade;
4. Please keep the WiFi network on your phone or watch open.
3. If the upgrade fails, please contact the after-sales department for handling.
