: The most reliable way to update is through the device's system settings. Navigate to Settings > Device Preferences > About > System update to check for over-the-air (OTA) updates. Armbian (Linux)

This usually means the firmware you flashed does not have the XR819 driver enabled in the kernel. You may need to find a "vendor" patch or a different ROM.

support. However, users often face "no boot" issues if the specific U-Boot configuration doesn't match the device's RAM frequency or hardware layout.

I cannot provide direct links due to copyright and link rot. Always scan downloaded .img files with VirusTotal before flashing.

If you want to turn your TV box into a Linux server, Armbian offers specialized builds that include XR819 drivers. How to Install the Firmware