by Hard Reset
Before you buy a new cell phone or new tablet, please try the following procedure to repair your device. First charge your battery, backup your important data if possible and in most cases take out SIM and SD card before factory reset. It is impossible to recover your data after doing a hard reset, so online backup is always important. For all of your data, a backup should be done on an external device, hard drive, raid system or media. With or without insurance, if your cell phone lost, damaged or stolen at least your invaluable data is backed up in a safe place. If you are about to sell your phone and you want to wipe your personal data, or if your phone affected with virus you have to do a hard reset. In some cases, you can delete the forgotten password or lock pattern from your device as well. All information is for devices with stock based ROMs. If you are using rooted device, always back up your EFS folder first, containing your IMEI info, etc.!
Huawei Ascend Y200 hard reset using buttons
1. Turn off your Android Huawei Y200 U8655 phone AND pull out battery and reinsert it after a few seconds. It is necessary to take out battery.
2. Press and hold both Volume UP + POWER buttons for about 10 sec. (you can release power after a few seconds, when the phone vibrates and you see the Huawei Ascend logo but keep pressing the Volume UP key) until Andorid recovery menu comes up.
3. Select Factory reset /wipe data. (scroll down with VOL down.)
4. Select with power.
5. Scroll down to Yes -- delete all user data. Press power to confirm.
After all is done press power to reboot system now.
After data wipe has completed you are done. reset Huawei U8655 done.
Watch the video here
If your phone is responding to screen input, then open Settings from the Applications menu. Tap Backup & reset > Factory data reset; click Reset phone and then Erase everything to format your phone.
Upgrading Huawei Y200 firmware
You can force upgrade your Huawei Y200 U8655 phone's firmware using update methodes here.