Hi everyboady, Cube U30GT1 android 4.2 OS SDK2.0 version stock firmware release.
Please comfirm your tablet is U30GT1, and you can check through “setting — about device — model” is U30GT C4.
Click to shop Cube U30GT1
Password is geekbuying.com
If you download the firmware steps to complete but the calibration firmware error, you can enter the upgrade mode to re-click the “fix” Brush; or you can unplug the cable, press the power button after 10 seconds and then release, then press the power button for 3 seconds. The normal boot can be used(Frist brush need to wait 2-3 minutes after upgrade, so that the completion of the Android system initialization)