How to downgrade iOS11.3.1 to iOS 10.X on A7 devices with SHSH blobs. With the latest ios11.x exploit it is now possible thanks to noncereboot1131 ipa file downgrade ios11.x In this post, you can read how to downgrade using iOS 10.3.3 OTA update files on A7 devices. It may also work in other devices like iphone 6 and iphone 6 plus. It is really simple. First of all this tutorial is for Linux and macOS, so if you are using Windows, you can use futurerestore port, but commands will be littlebit diffrent.
How to restore to iOS 11.3.1 with SHSH BLOBS
What will you need?
two iPSW files
iphone or ipad ios11.3.1 or any other empty_list or multi_path iOS exploit
How to do that?
Create folder downgrade and put futurerestore files to it
Download iOS ipsw for the version you want to downgrade and for iOS 10.3.3 (from here)
Download BuildManifest OTA for your device from here and put it in downgrade folder
Rename iOS 10.3.3 ipsw file to zip and extract it
Search for baseband (like
Search for sep (like
Put these files into downgrade folder
Put your SHSH blob without APNonce to downgrade folder
Put iOS you want to downgrade to downgrade folder
Install and run noncereboot1131 on you device
Open you shsh file and search for the generator like
Put it in noncereboot1131 and apply it
Now do not turn off your device and open terminal
./futurerestore_linux -t yourshsh.shsh2 -b baseband.bbfw -p BuidManifestOTA.plist -s sepfileforyourboard.im4p -m BuidManifestOTA.plist -d ipswtodowngrade.ipsw
- And press enter. Now your device should reboot to recovery and start restoring.
It must be mentioned that you need ERASE (full blobs) not just OTA blobs for this to work. The versions that are fully compatible with the iOS 10.3.3 SEP are iOS 10.2-10.3.3.