Download link: CX-998 CX-998C TV BOX FIRMWARE
Flash Tool: Rockchip BatchTool v1.7
1, Open the “RKBatchTool.exe” in the BatchTool file, on the top, you will see a “FW Path”, click the button on the right side, and select the “CX-998_rk3288_ap6330_v4.4.2_data2GB_20140917.img” file in firmware file.
2, Connect the box to the computer with USB cable, press the recover button and then power on, remove your hand from the recover button until it connect successfully that shows in “Connected Devices”
3, Click “Upgrate” to start flash.