Download Geant stock firmware from here (based on device model number), flash it on your smartphone or tablet using a flash tool, and enjoy the native Android experience again. If your Geant device is bricked, flashing stock firmware is the only possible way to unbrick it.
Download Geant Stock ROM Firmware
|Geant Models||Android Version||Download Stock ROM|
|Geant X1||4.4.2||Download Firmware|
|Geant E1||4.4.2||Download Firmware|