Download Lollipop 6.0 stock firmware for XGody MXQ-4K TV Box from here or here. Download previous firmware from here. Download Lollipop 5.1.1 stock firmware for XGody MXQ-4K TV Box from here. Download Rockchip Driver Assistant v4.4 from here and download Rockchip Batch Tool v1.8 from here.
Model: XGody MXQ-4K TV Box
Image file size: 1.00 GB
Platform: Rockchip RK3229 / RK322A
Image name: update786_MXQ-4K_20170407.img
SDK version: RK30_ANDROID6.0.1-SDK-v1.00.00
FW version: 6.0.01
Boot version: 2.31
Model number: MXQ-4K
Build number: MXQ-4K user.akrd-50.20170407.110033
Inside archive: firmware + MXQ-4K烧录过程 + MXQ-4K烧录工具 (AndroidTool_Release_v2.31 + DriverAssitant_v4.4)
Caution: Please do not update firmware unless you know what you are doing, you really want it or it is absolutely necessary. Firmware updates may occasionally have bad results, like bricking your device, temporarily or permanently. The firmware update process is done entirely at your own risk. Before attempting to update the firmware, back up your data.