This Russian forum is the "holy grail" for RK322x development. Use Google Chrome's translate feature. It contains custom ROMs (Android 7.1, 9.0, and even Android TV ports) that often run better than the stock software. FreakTab Forums

Ideal for a dedicated Kodi media center. Unofficial builds can be found on the LibreELEC forum . Legacy Android 4.4/5.1: Used for older MXQ 4K Pro models. 2. Identifying Your Box Version

Press and hold the "Reset" button (usually hidden inside the AV port) with a toothpick while plugging in the USB cable to your PC. Load Firmware: Open the Factory Tool, select the firmware file, and click Instructables