Download Android Pie 9.0 stock firmware for MX10 Pro TV Box from here or here. Download Android Oreo 8.1 stock firmware for MX10 Pro TV Box from here. Download Rockchip Driver Assistant v4.4 from here and download Rockchip Batch Tool v1.8 from here.
Archive: MX10 Android 9.0 20190108
Archive size: 899 MB
Model: MX10 Pro TV Box 4GB RAM + 32GB ROM
Platform: Rockchip RK3328 / RK322H
Image name: MX10 Android 9.0 20190108.img
FW version: 9.0.00
Boot version: 2.49
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.