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tambien sale excelente frp de optopus solo vol - y conecta el cable instala driver y listo corre solo
Platform: AVVIO
Selected model: A400
Please, reconnect battery, press and hold "Vol+" or "Vol-" button and connect USB cable.
Searching for a phone. Please wait...
Found phone on COM94
Connecting...
Mobile Status: SPRD3
Sending preloader...
Mobile Status: Spreadtrum Boot Block version 1.1
Sending mainloader...
Reading info...
Brand: Avvio
Model: Avvio_A400
Device: Avvio_A400
Platform: sc8830
Android version: 7.0
Display ID: NRD90M release-keys
Searching for signatures...
Resetting FRP lock..
FRP lock is successfully reseted!
Backup saved as AVVIO_A400_02-04-2019_14-06-43.dump file
Performed by 1.6.8.0 Software version
Platform: AVVIO
Selected model: A400
Please, reconnect battery, press and hold "Vol+" or "Vol-" button and connect USB cable.
Searching for a phone. Please wait...
Found phone on COM94
Connecting...
Mobile Status: SPRD3
Sending preloader...
Mobile Status: Spreadtrum Boot Block version 1.1
Sending mainloader...
Reading info...
Brand: Avvio
Model: Avvio_A400
Device: Avvio_A400
Platform: sc8830
Android version: 7.0
Display ID: NRD90M release-keys
Searching for signatures...
Resetting FRP lock..
FRP lock is successfully reseted!
Backup saved as AVVIO_A400_02-04-2019_14-06-43.dump file
Performed by 1.6.8.0 Software version
