Tx9 Pro Android Tv Box Firmware Link -

If your box still boots, you can flash the firmware via a MicroSD card . You load the image onto the card, insert it into the TX9 Pro, and hold the "Reset" button (usually inside the AV jack) while plugging in the power. Important Safety Tips

Never unplug the power during the flash process, as this will permanently damage the hardware. tx9 pro android tv box firmware link

This site has the most extensive collection of TX9 Pro firmware, though you may need a browser translator to navigate it. How to Install the Firmware If your box still boots, you can flash

This is the most comprehensive archive. Search for "TX9 Pro" to find various versions, including the stock Android 7.1 Marshmallow or newer 9.0 builds. If your box still boots

Flashing new firmware will wipe everything on the device.