Pues acabo de probarlo con la app de Musica qu eteneis en esta misma pagina y con estas instrucciones:
Connect the watch to your computer via USB and access via ADB (install ADB Drivers as needed)
Open command prompt or shell
Type «adb devices» to check if your devices is listed
Type «adb install AmazfitIntervalTimer0.1b.apk» to install the app to the watch (make sure to use the correct path to the APK, if not copied to ADB folder)
You should see the Success message after sometime
To uninstall type «adb uninstall saglia.com.amazfitintervaltimer» from your command prompt or shell
extraidas de: https://forum.xda-developers.com/smartwatch/other-smartwatches/amazfit-interval-timer-0-1b-t3573016
Y me ha funcionado….mas facil imposible.
Yo tengo la Rom 1.2.4f