Ever since the release of Apple iOS 6, it has not been a pleasant experience for those users who have upgraded their devices to the latest version of the mobile operating system, thanks to a number of glitches such as the lack of features like YouTube and Google maps.
Courtesy iOS 6: Fix Painfully Slow Apple App Store Issue [How-To-Guide]
Given the unexpected issues within iOS 6, it appears that many users, who have upgraded to the new firmware version, are now looking to get back to the familiar iOS 5.1.1 for iPhone, iPad and iPod touch. If you have also upgraded your A4-based iOS device to iOS 6 and would like to downgrade back to iOS 5.1.1, you have got luck on your side.
Yes, if you have an iPhone 4, iPod touch or below running iOS 6, you can now downgrade to iOS 5.1.1. However, you need to have your SHSH blobs (Signature HaSH blobs) saved for iOS 5.1.1 as Apple has stopped signing iOS 5.1.1.
iDownloadBlog has provided a detailed how-to guide for downgrading iOS 6 to iOS 5.1.1. But before going ahead with the downgrading process, here are some vital points to be aware of:
Step 2:Download the 5.1.1 IPSW file for your device.
Step 3: Locate the SHSH blob that you saved earlier on your computer or on Cydia and place it in the same folder as the 5.1.1 IPSW file. If the file is stored on Cydia, then go on with that.
Step 4: Place the iOS 6 running device into DFU mode.
Step 5: Open RedSn0w, and click Extras > SHSH blobs > Stitch.
Step 6: Click IPSW and select the iOS 5.1.1 IPSW for your device.
Step 7: If you have saved the SHSH blobs on Cydia, click “Cydia” under the blobs section. But if you have saved the blobs on your computer, click “Local” and select the SHSH blob for iOS 5.1.1 for your device.
Step 8: After the IPSW and blob are selected, RedSn0w will stitch them together and then a firmware file for iOS 5.1.1 will be created, which can be used to downgrade, even though Apple stops signing iOS 5.1.1.
Step 9: Now, in Redsn0w, go back two pages and click “Pwned DFU” to place your device into Pwned DFU mode to let iTunes restore using the stitched firmware. If you don’t do this, there will be error 1600 in iTunes.
Step 10: Open iTunes and it will detect the device in recovery mode. Now, hold “Option” and click “Restore.” After that select the new stitched firmware file, which should be prefixed by a series of 13 numbers, the device’s ECID (Exclusive Chip ID).
Step 11: Wait for iTunes to completely restore the device. You may get an Error (-1) from iTunes, ignore that.
Step 12: Open Redsn0w and click Extras > Recovery fix.
Step 13: Place the device again into DFU mode and the Recovery fix should run successfully.
Step 14: Once the Recovery fix is completed, your device will be completely restored on iOS 5.1.1.