How to Hard Reset the Dopod 838

Yeah my Dopod 838 was rock stable until I messed with the registry and had to hard reset. Here's how to do it :

1. Press and hold voice button + communication button (the 2 side buttons on the top)
2. Press and release reset button
3. Keep holding voice + comm untill message appears on the screen * IMPORTANT*
4. Press the Send/Green Phone button to confirm

Fortunately I could fully restore from my SPB Backup easily.