Apple Stops Signing OS 3.1.2

Apple ceased signing 3.1.2 firmware today, which means that Apple will no longer activate the 3.1.2 firmware for use on 3GS and iPod touch 3G.

If you have an iPhone 3GS or iPod touch 3G on 3.1.2 and want the ability to downgrade back to 3.1.2 in future then make sure you have backed up your ECID SHSH signatures through Cydia or Rock. Users of these devices who haven’t backed up their signatures in this way will be stuck at 3.1.3 if they are forced to restore.

Source: BigBoss

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