If you are looking for firmware for an MXQ TV Box labeled "Rk3229 EMCP V3.1", please read the following carefully to avoid damaging your device.
The MXQ RK3229 eMMC V3.1 remains a capable 4K media player if running correct, stable firmware. The key to success is matching the PCB version (V3.1), the storage type (eMMC), and the Wi-Fi chipset. Always back up your original firmware using the "Export" function in Rockchip Batch Tool before flashing new software. Mxq Rk3229 Emcp V3.1 Firmware
Open Flash Tool: Download and run AndroidTool.exe (Factory Tool) as an administrator. 📄 Guide: MXQ Rk3229 EMCP V3
What to look for in the filename:
A valid firmware file should look like: MXQ_RK3229_eMMC_V3.1_Android_7.1.2_ RTL8723BS_20180523.img Open Flash Tool: Download and run AndroidTool
Avoid generic "RK3229 firmware" from file-hosting sites that do not mention "eMCP V3.1".