Download latest KitKat 4.4.2 stock firmware for CX-S806 TV Box from here or here. To flash firmware on this box from PC via AMLogic USB Burning Tool read this article. Download previous firmwareversion from here.
Archive： S806_S812_DDR2G_WIFI6210_sdk0823_20141117
Update file: S806_S812_DDR2G_WIFI6210_sdk0823_20141117.img
Model: Ugoos CX-S806 TV Box
Image file size: 480 MB
Platform: Amlogic S812
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