Download Android 7.1 stock firmware for X99 TV Box
This firmware is for X99 TV Box with Rockchip RK3399 as CPU. BTW, you can now buy X99 TV Box from Gearbest.com for only $126.99 with free shipping world wide.
Archive: X99 4GB/32GB RK3399 4K TV Box Firmware Update 20180323
Model: X99 TV Box
Image file size: 701 MB
Platform: Rockchip RK3399 / RK330C
Image name: X99_20180323（Hide kodi18.0）/ t9_rk3399_d32_ap6255_x99_20180323（隐藏kodi18.0）.img
FW version: 7.1.01
Boot version: 1.09
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.