Download latest Android KitKat 4.4.2 stock firmware for CSQ8 A80 TV Box from here or here. Download previous firmware version from here.
Firmware: CSQ8-A80-4.4-6335-20141230_V2
Image file name: CSQ8-A80-4.4-6335-20141230_V2.img
Image file name: CSQ8-A80-4.4-6335-20141230_V2.img
Model: CSQ8 A80 TV Box
Image file size: 411 MB
Platform: Allwinner A80
FW version: CS-Q8_4.4.2-a80-v2.0rc3
Build number: CS-Q8-eng 4.4.2 KOT49H 20141230 test-keys
Style: CS-Q8
Pixels: 720x576
FW version: CS-Q8_4.4.2-a80-v2.0rc3
Build number: CS-Q8-eng 4.4.2 KOT49H 20141230 test-keys
Style: CS-Q8
Pixels: 720x576