Allwinner T5 Firmware Update Full

adb shell su -c "dd if=/dev/block/by-name/system of=/sdcard/system.img"
adb pull /sdcard/system.img
adb shell su -c "dd if=/dev/block/by-name/boot of=/sdcard/boot.img"
adb pull /sdcard/boot.img

Because this is a full update, your Google Play Services might be old. Download the latest APK from APKMirror (Android 10/11/12 variant). Then reinstall:

Once you have downloaded the ZIP or RAR file, you cannot just copy it to a USB drive as-is. The T5 processor requires a specific file structure to recognize the update. allwinner t5 firmware update full