How To: Downgrade iOS 5.1 To iOS 5.0.1/5.0 On iPhone 4/3GS, iPad 1G, iPod Touch 4G/3G
Apple released the iOS 5.1 firmware update right after they announced the new iPad and the Apple TV 3G on March 7th. Although we warned Jailbreakers to stay away from the iOS 5.1 firmware update, I am sure there are some people who have accidentally upgraded to iOS 5.1.
Now the reason why accidentally upgrading to the iOS 5.1 firmware is a big deal, is because only the iOS 5.0.1 firmware can be Jailbroken Untethered at this time. This means if you upgraded you will only be able to Jailbreak tethered, or worse, even not at all for those who upgraded their iPhone 4S or iPad 2.
If you are looking for a how to guide on how to downgrade your iPhone, iPod Touch or iPad from the iOS 5.1 firmware to the iOS 5.0.1 or iOS 5.0 firmware then you are in luck! In this how to guide from iJailbreak.com you will learn how to downgrade your A4 iOS device to the iOS 5.0.1 or iOS 5.0 firmware from iOS 5.1. Before we start however make sure you meet the requirements listed below…
iOS 5.1 Downgrade Requirements:
- Supported iOS devices include the iPhone 4, iPhone 3GS, iPad 1G, iPod Touch 4G, iPod Touch 3G. Unsupported iOS devices include the iPhone 4S, and iPad 2.
- APTicket + saved SHSH blobs for the iOS 5.0.1 or iOS 5.0 firmware.
- A Windows computer.
Downgrade From iOS 5.1 To iOS 5.0.1 / iOS 5.0
Step 1) – The first thing you will need to do is download a tool developed by iH8Sn0w called iFaith. What the iFaith tool does is dumps the SHSH blobs directly off your iPhone, iPod Touch or iPad for the firmware you are currently running. Allowing you to stitch together a custom firmware that can downgrade your iOS device to a previous firmware version Apple is not signing. If you are following this how to guide you most likely already used this tool to dump your iOS 5.0.1 or iOS 5.0 SHSH blobs.
Download iFaith 1.4.2 (Windows)
Step 2) - The next thing you will need to do is run iFaith (click the OK button once you have read the warning).
Step 3) - With iFaith up and running you will need to click the Build *signed* IPSW w/ Blobs button.
Step 4) – Upon clicking the button previously mentioned you will need to browse for the saved SHSH blobs file that was created when you saved your SHSH blobs for the iOS 5.0.1 or iOS 5.0 firmware.
Step 5) – It is now time to browse for the iOS 5.0.1 or iOS 5.0 firmware file. Depending on which SHSH blob file you selected you will need to select either the iOS 5.0.1 firmware file or iOS 5.0 firmware file (download iOS firmware files here).
Step 6) – After you have selected the right firmware file iFaith will begin creating your custom firmware file.
Step 7) – When your custom firmware file has been created go back to the iFaith main menu (if you are not there already) and click the Use DFU Pwner (iREB) button. Now simply follow the instructions presented to you for putting your iPhone, iPod Touch or iPad into pwned DFU mode.
Step 8 ) – With your iOS device in pwned DFU mode you will need to launch iTunes and restore your iPhone, iPod Touch or iPad to the custom firmware file you created. This can be done by Option (alt) clicking the Restore button on Mac OS X or by SHIFT clicking the Restore button on Windows.
Congratulations! You have now downgraded your A4 iOS device from the iOS 5.1 firmware to either the iOS 5.0.1 firmware or the iOS 5.0 firmware. If you have any further questions or concerns please leave them in the comments section below…
Update #1: Learn how to fix iTunes Error 3194 by clicking here.