Downgrade A4 Devices from iOS 5.1 to 5.0.1 using Custom iFaith IPSW

Posted: 03/29/2012 in G.N.A.HackTeam, Info, iPhone and iPad
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This method uses custom SHSH Dumped IPSW so as to Restore your iDevice using iTunes. Let’s see how:

Downgrade iOS 5.1 To 5.0.1 Custom Firmware With iFaith

NOTE: This method works for A4 devices only, i.e. iPhone 4, 3GS, iPad 1, iPod touch 4G, 3G.

STEP 1: Download iFaith from here and the iOS 5.1 (iOS Download Links for all available devices at the End of this Tutorial).

STEP 2: Run iFaith, and choose “Build *signed* IPSW w/Blobs” > “Build IPSW”.

STEP 3: Now browse for the SHSH blobs saved on your computer to downgrade back to iOS 5.0.1 or iOS 5. iFaith will ask you to select the IPSW firmware for the iOS you’re on it, select iOS 5.1. Finally iFaith will create a new custom firmware file for you on the desktop with SHSH blobs for the firmware you are downgrading to.

STEP 4: Head to iTunes, put your device in DFU mode and select the custom firmware created by iFaith on iTunes to restore.

Downgraded to 5.0.1! Head on Redsn0w and Jailbreak your iDevice!

Download iOS 5.0.1

(NOTE: iFaith is a Windows-Only Software. No Mac or Linux Versions are available)

 

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