08-02-2009 12:48 AM
According to the OS release loaded to your device it can be different methods.
If you have OS 4.3 or greater (Look at Options > About, third line down beginning with a "v.4.xxx") you can use JL_Cmder and its "Reset to Factory" command.
Follow the instructions here:
If you have OS 4.2, there is not an easy way... you can wipe personal settings, calendar, preferences, messages, etc., from the device go to Options > Security > General Settings > Menu > Wipe Handheld.
This last method won't reset the device to factor settings, but it will be adequate.
PIN: C0001B7B4 Display/Scan Bar Code
PIN: C0005A9AA Display/Scan Bar Code