If the Android OS is too slow, many users prefer to install LibreELEC (a Kodi-based Linux OS) to the SD card, making the box much faster.
MXQ RK3229 eMCP V3.1 firmware refers to the specific software build for TV boxes using the Rockchip RK3229 chipset and the Mxq Rk3229 Emcp V3.1 Firmware