You will need to locate a reliable source for the Android 10 image file. Since the T9 is a generic "white label" box, official manufacturer websites are rare. Most users find stable builds on community forums like XDA Developers or specialized TV box databases.
Open the Rockchip Batch Tool (RKBatchTool.exe) on your computer. Click the "..." button at the top right of the tool. t9 firmware android 10
If the PC does not recognize the device, try switching USB ports on your computer or using a shorter USB cable. If the flashing process fails at 0%, it usually indicates that the drivers were not installed correctly or you are using the wrong USB port on the TV box itself. You will need to locate a reliable source
The tool will show a progress bar. Do not unplug the cable or turn off your PC during this time. Open the Rockchip Batch Tool (RKBatchTool
Once the update is complete, the first boot-up may take 5 to 10 minutes. Once loaded, you will have a fresh installation of Android 10, ready for your favorite streaming applications and custom launchers.