[How-To] Downgrade iPhone 3G Firmware using iREB 3.1.2
Tuesday, March 09, 2010
Download link : iH8sn0w – iREB V3.1.2 For Windows-English
iREB 3.1.2 of iH8sn0w team is a utility which will permit you to downgrade your firmware to 3.1.2 for iPhone 3G/3GS and iPod Touch 3G.
For iPhone 3GS, it permit to save your ShSh file under Firmware 3.1.2 in order to be able to downgrade for the future Apple update.