32bit-OTA-Downgrader

Downgrade 32-bit iOS devices to iOS 8.4.1 or iOS 6.1.3 (see supported devices below first!)

• Please see "Other notes" below to serve as answers for FAQs

Prerequisites:

• A supported 32-bit device jailbroken on any iOS version
• iOS 8.4.1 or 6.1.3 IPSW for your device (the script can also download it for you)
• A Linux install/live USB (see distros tested on below) (a live USB can be easily created with tools like balenaEtcher or Rufus)
• macOS (tested on 10.13 and 10.14 only) should also work, but I won't be able to provide support when the script breaks
• iOS 7/8 Pangu users: Install the latest Pangu 7.1.x Untether (deb) or latest Pangu 8.0-8.1.x Untether (deb)
• iOS 9 and below users: Install OpenSSH; The computer and device must be on the same network for SSH to work
• iOS 10 users: Install MTerminal

How to use:

1. Download or git clone this repo
2. Plug in your iOS device in normal mode
3. Open Terminal, cd to the directory where the script is located (example: cd /home/user/32bit-OTA-Downgrader)
4. Run chmod +x restore.sh
5. Run ./restore.sh
6. Select option to be used (8.4.1/6.1.3 downgrade)
7. Follow instructions

Supported devices (iOS 8.4.1 downgrade):

• All A5, A5X, A6, and A6X devices except iPhone5,3 and 5,4 (iPhone 5C) are supported

Supported devices (iOS 6.1.3 downgrade):

• Only iPhone 4S and iPad 2 devices except iPad2,4 (iPad 2 Rev A) are supported

Other notes:

• You do NOT need blobs to use this, the script will get them for you
• This script will also restore your device to the latest baseband (N/A to devices with no baseband)
• This script has a workaround for the activation error on iOS 10 devices
• This script uses the futurerestore method for downgrading, NOT the Odysseus method nor modifying SystemVersion.plist
• This script will use an unmodified IPSW to restore
• This script only uses iBSS patches from bundles for entering pwnDFU mode, NOT for creating a custom IPSW
• This script can also be used to enter kDFU mode for all supported devices
• This script can also be used to futurerestore to other iOS versions when provided with SHSH blobs
• This script should also work on virtual machines, but I won't provide support on them

Linux distros tested on:

• Lubuntu 16.04 live USB
• Lubuntu 18.04 live USB
• Arch Linux full install
• Manjaro live USB and full install

Tools used by this script:

• cURL

• bsdiff (bspatch)

• ideviceinfo

• ifuse

• tsschecker

• futurerestore

• xpwntool

• kloader

• kloader5 (iOS 5)

• kloader_hgsp (iOS 10)

• partialZipBrowser

• python3 (http.server)

• iBSS patches are from OdysseusOTA, OdysseusOTA2, alitek12, gjest