Download Android Jelly Bean 4.2.2 stock firmware for MK808C TV Stick

Download Android Jelly Bean 4.2.2 stock firmware for MK808C TV Stick from hereor from here. 
 

Archive name: A20_sun7i_android_sugar-dongel_au8723_mk808c_20140528
Image: A20_sun7i_android_sugar-dongel_au8723_mk808c_20140528.img
Archive file size: 329 MB
Model: MK808C TV Stick / sugar-dongel_au8723
Platform: Allwinner A20
FW version: v2.0
Company: softwinners
Build number: sugar_dongel_au8723-eng 4.2.2 JDQ39 20140528 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.