Download latest Android KitKat 4.4.2 Stock Firmware for Ugoos UM2 from here, here or here. Download previous firmware from here.
Firmware details
Update file name: dg12_20141220_ugoos
Image: dg12_20141220_ugoos.img
Archive size: 209 MB
Model: Ugoos UM2
Model number: rk31sdk
Platform: Rockchip RK3188
FW version: 4.4.02
Boot version: 2.16
Build number: Android 4.4.2 KOT49H eng.zf.20141125.150250 test-keys
Model: Ugoos UM2
Model number: rk31sdk
Platform: Rockchip RK3188
FW version: 4.4.02
Boot version: 2.16
Build number: Android 4.4.2 KOT49H eng.zf.20141125.150250 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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