Change the Profile of your iPhone to Firmware 3.0 or more!

How to change the profile of your iPhone v1, 3G, 3Gs jalbroken under Firmware 3.0 or more! How to go from home mode to work mode, or school mode, or meeting mode, etc. ! And this, in just a few clicks! Application: Mobile Profiles Friendly, iPodTouchisapro

Source Cydia : http://apt.ipodtouchisapro.org/ .