Sign out of Zepp app and log in again. When you open Zepp app, it will connect with the watch and update automatically.
Uninstall/Install Zepp app, log in the app, and connect again.
Erase Bluetooth Share Data and app caches if you are using an Android phone. Then reboot your mobile phone
Before updating your device, we suggest you fully charge your device or make sure it has at least 10% battery left. Keep your phone screen on and do not perform other operations on your phone during upgrade.