Download latest Android Jelly Bean 4.2.2 stock firmware for CS918 / MK888B / K-R4 TV Boxes from here or from here.
Firmware： rk3188_cs918_8723rtk_140930
Image file name: rk3188_cs918_8723RTK_140930.img
Model： CS918 / MK888B / K-R4 TV Boxes Realtek WiFi chip version
Archive size: 338 MB
Platform: Rockchip RK3188
Boot version: 2.16
FW Version: 4.1.01
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