heyplus EU Admin·
Firmware upgrade failed
1. Please keep your watch and mobile phone connected closely during the upgrade process
2. Please keep the black plus app running in the foreground during the upgrade process
3. Please try to restart the Bluetooth of the mobile phone, restart the watch and upgrade again
2. Please keep the black plus app running in the foreground during the upgrade process
3. Please try to restart the Bluetooth of the mobile phone, restart the watch and upgrade again