2 Replies Latest reply: Feb 16, 2012 5:25 PM by captaintsubasa
Here are the steps for performing a master reset using the hardware keys:
If the phone is locked, frozen, or unresponsive, you can hard reset it using the hardware keys instead of the menu.
1. Back up all necessary data if the device is responding and can synchronize files.
2. Turn off the phone.
Note: If the phone is unresponsive and does not turn off, remove the battery and then re-insert it.
3. Press and hold the Home key, Volume Down key and Power key at the same time.
4. Continue to hold the keys until the device turns back on.
5. When the device turns on and you see the reset screen (Android in a Box), release the keys.
These steps were found at: http://www.fanofandroid.com/2011/04/how-to-master-reset-lg-optimus-t-black.html