Download Android Jelly Bean 4.2.2 stock firmware for CSQ GV-11D TV Box from here or from here. Download previous firmware from here. Download a newer firmware from here.
Firmware details
Archive name: CSQ-A20_20140923
Image file: CSQ-A20_20140923.img
Archive file size: 333 MB
Firmware version: v1.2patch2rc1
Style: GV-11D
Company: softwinners
Platform: Allwinner A20
Pixels: 1280 x 720
Build number: sugar_xbh_ff-eng 4.2.2 JDQ39 20140922 test-keys
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.
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