Download MuPhone stock firmware from here (based on the model number) of your device, flash it on your smartphone or tablet using a flash tool and get back the native Android experience again. If you have corrupted your MuPhone device, flashing stock firmware on your device is the only way to get it back to a working condition again.
Download MuPhone Stock ROM
|MuPhone Models||Android Version||Download Stock ROM|
|MuPhone M5000||NA||Download Firmware|
|MuPhone M200||NA||Download Firmware|
|MuPhone X20||5.1||Download Firmware|