Ensure the handset is powered off.
If the handset cannot be powered off normally, remove and reinsert the battery.
While the handset is powered off, press and hold the Volume Down and Send keys.
While holding down the Volume Down and Send keys, press and hold the Power key.
Once the boot screen appears, release the Volume Down, Send, and Power keys.
Press the Volume Down key to scroll to wipe data/factory reset.
Press the trackpad to select.
Press the Volume Up key.
The handset will reload the software. This may take several minutes.
Once the menu appears, press the trackpad.
The handset will restart.
The master reset is now complete.