With the file downloaded, Alex proceeded to flash the firmware onto his TX9 Pro. The process was a bit nerve-wracking, as he watched his device reboot and the update install. But when it was all done, he was greeted with a familiar interface... yet something was different.
Look at the right panel of the USB Burning Tool and ensure and "Erase Bootloader" are both checked. Click the Start button in the tool interface. tx9 pro android tv box firmware link
These forums host archived stock firmware images shared by community developers. With the file downloaded, Alex proceeded to flash