1/ Switch off the phone (either removing the battery or shutting down by holding the "end call" button for few seconds
2/ While being switched off, hold the "home" (house) and "back" (the arrow in the lower right corner)
3/ Hit briefly the "end call" button" while still holding the "home" and "back" buttons.
4/ Release the "home" and "back" button, a white screen containing technical information should appear, with a red message asking for hitting the "menu" button.
5/ Hit the "menu button", the Hero will now boot with factory settings.
Factory settings means that every information stored on the ROM (NOT your SD memory card) will be cleared (for me it was just the address book which was instantly updated thanks to my Google account).
2/ While being switched off, hold the "home" (house) and "back" (the arrow in the lower right corner)
3/ Hit briefly the "end call" button" while still holding the "home" and "back" buttons.
4/ Release the "home" and "back" button, a white screen containing technical information should appear, with a red message asking for hitting the "menu" button.
5/ Hit the "menu button", the Hero will now boot with factory settings.
Factory settings means that every information stored on the ROM (NOT your SD memory card) will be cleared (for me it was just the address book which was instantly updated thanks to my Google account).