Legacy TV boxes often suffer from sluggish performance and app incompatibility. Moving to an exclusive Android 9.0 firmware offers several key advantages:

: Click "Restore" for a clean wipe (recommended) or "Upgrade" to keep settings.

Moving from an older Android version to a specialized Android 9.0 build provides several benefits for the RK3229 chipset:

Try a different USB port on your PC (preferably a USB 2.0 port on the back of the motherboard). Ensure you are holding the AV reset button firmly while plugging it in.

What are you trying to fix by upgrading the firmware?