If you have recently upgraded your iOS device to version 6.0 , this is how you downgrade it back to 5.1.1 . The downgraded tutorial works for iPhone 4 , iPhone 3GS and iPod Touch 4 . You will need the SHSH and APTickets for your previous firmware for a successful downgrade . This is possible if you have used TinyUmbrella and manually saved your SHSH blobs or used Cydia at least once which automatically uploads the required certificate files in its servers online .
Steps to Downgrade iOS 6.0 :
- Download Redsnow 0.9.14b2
- Download iOS 5.1.1 ipsw firmware file for your iPhone 4 , iPhone 3GS and iPod Touch 4
- Switch off your iPhone 4 and connect it with your computer using the USB cable
- Put your device in DFU mode by following the instructions below
- Extract and launch Redsnow from the downloaded .zip file . Windows users run Redsn0w in Administrator Mode . For doing this you have to right-click on the Redsn0w.exe application and select “Run as an Administrator” in the menu options
- Redsnow will now detect your connected device and confirm its DFU condition
- Click on the Extras > SHSH blobs > Stitch button
- Now click on the IPSW button and select the downloaded 5.1.1 ipsw file
- In this step you have to retrieve your old iOS 5.1.1 SHSH blobs . If you have stored them locally then click on the Local button or click on the Cydia button if you have installed Cydia on 5.1.1
- Redsn0w will fetch blobs from the server and give the following message when successful “Blob stitching done” .
- Go back to Redsnow > Extras > Pwned DFU and click the button . Follow onscreen instructions .
- iTunes will now detect your device in Recovery Mode (Assuming iTunes is installed and running on your computer)
- Now Restore your iPhone to older 5.1.1 firmware . In the left panel on iTunes select your device and press the Option (on Mac) or Shift key (on Windows) and click the Restore button .
- Browse to the custom 5.1.1 ipsw file created in Step 10 .
- Wait for iTunes to complete the restoration process using older firmware . You will see the following screen
- If you faced any Restore error in the previous Step , you may have to edit the Hosts file . Go to windows > system 32 > drivers > etc and open up the hosts file . Mac users will simply need to open the etc folder . Launch your favorite text editor (like Notepad) and add the following text: 188.8.131.52 gs.apple.com at the end of the file . Now save the file to its original location
- Launch Redsn0w and go to Extras > Recovery fix . Put your iOS device in DFU mode again, and the Recovery fix will run to fix booting . After the process completes your device will restart and you will have iPhone 4 running iOS 5.1.1 .
- After downgrading to a fresh iOS 5.1.1 install , use our 5.1.1 Jailbreak Tutorials to install Cydia on your device . iOS 5.1.1 is supported jailbreak by Absinthe , Redsn0w and Sn0wbreeze .
Watch This Downgrade Video Tutorial on YouTube :
Note : iPhone 4S , iPad 2 and other A5 , A6 processor powered devices are not supported by this tutorial . Stay tuned for the latest updates on downgrading iOS version .