Retroid Pocket 3+ Firmware Update (OTA Updates)

Make sure the battery is charged above 50 percent.
Connect to a Wi-Fi network (supports 2.4 and 5 GHz).
Open settings (from the notification shade or the home screen), scroll down, and select “System”.
Scroll down and select “Advanced” >> “Updater”.
In the new window, tap “Check Update”. My device came with version 1.0.0.57.
The console will find firmware version 1.0.0.86, tap “check info”, then “update”.
Wait for the update to complete – about 10 minutes – and tap “YES” to restart.
The process is complete, and the console is ready to use.