Posted by: john1027
I haven't had to try it yet on the S620, but most HTC devices will hard reset by:
1. Press and hold soft1 and soft2 keys.
2. Press and hold power button for around 1 to 1.5 seconds. Release power button. Keep hold soft1 and soft2 keys.
3. Later, screen should show instructions to ask user to press '0' key to reset to factory default.
4. Press '0' within the timeout period, which is only several seconds only.
5. If no instruction is shown on the screen, repeat steps 1 to 4.
The timing is sensitive.
Let us know if it still is that way with the S620/Dash. I would be surprised if it wasn't. It is set-up that way on the 3125/Qtek 8500/smartflip as I just did it yesterday.