Hard Reset .NET is a freeware application for Windows Mobile 2003 based Smartphones that allows you to hard reset the device to default factory settings unlike a conventional hard reset which involves a combination of hardware buttons. The latest Windows Mobile 5.0 Smartphones ship with the Clear Storage utility but the older Windows Mobile 2003 Smartphones don’t.

All informations stored on the phone’s internal memory (\Storage) like System settings, Inbox messages, phonebook entries, homescreens, programs installed, registry keys changes/tweaks will be erased

Download here

The software author has also developed a desktop based version of the software for hard resetting a Windows Mobile 2003 Smartphone via USB cradle/cable which can be downloaded here