Download and install the latest version of iTunes
Now start iTunes and sync your iPhone with your PC so that it backs-up all your important data including settings, apps, music, contacts and photos.Step 3:
Download Sn0wbreeze 2.0.2 and the original iOS 4.1 firmware file (download links at the end of the page). Move all these to your desktop.Step 4:
Start Sn0wbreeze ( please note that when used Win Vista or Windows7 , you need to start your application in Administrator mode , by clicking the right mouse button on the icon and selecting "Run as administrator" ) and select “Expert Mode” for easy process, then click the blue arrow to contiue.
Step 5: Sn0wbreeze will ask you to locate the .ipsw original firmware file. Point to the correct iOS 4.1 file by clicking on “Browse” butt...