Legacy-iOS-Kit/README.md

iOS-OTA-Downgrader

• iOS-OTA-Downgrader can downgrade/restore and jailbreak supported iOS devices to signed OTA firmwares.
• Linux, macOS, and Windows are supported
• iOS 6.1.3 and 8.4.1 downgrades have the option to jailbreak the install
  • For iOS 10.3.3, use TotallyNotSpyware or sockH3lix to jailbreak
• You do NOT need blobs to use this, the script will get them for you
• This script can also restore your device to other iOS versions that you have SHSH blobs for
  • 32-bit devices only, iOS 10 blobs/versions are not supported
• Please read TROUBLESHOOTING.md for tips, frequent questions, and troubleshooting!

Supported devices

• Identify your device here
• iPhone 5C and iPad mini 3 devices are NOT supported!
  • iPhone 5C can still be restored to versions that you have SHSH blobs for

Target Version	Supported Devices
iOS 10.3.3	A7 devices:
	iPhone 5S
	iPad Air 1
	iPad mini 2 (except iPad4,6)
iOS 8.4.1	32-bit devices:
	iPhone 4S
	iPhone 5
	iPad 2, iPad 3, iPad 4
	iPad mini 1
	iPod touch 5
iOS 6.1.3	iPhone 4S
	iPad 2 (except iPad2,4)

Requirements

• Read HOW-TO-USE.md for a step-by-step tutorial
• A supported device in any iOS version (listed above)
• A 64-bit Linux install/live USB or a supported macOS/Windows version
• The IPSW firmware for the version you want to downgrade to
  • Links: iOS 10.3.3, iOS 8.4.1, iOS 6.1.3 (ignore the signing statuses in the site)
  • The script can also download it for you

For Pangu 32-bit users:

• For 32-bit users using Pangu and normal method, install the latest untether for your iOS version here

Supported OS versions/distros

• Ubuntu 20.04 and newer, and Ubuntu-based distros like Linux Mint
• Arch Linux and Arch-based distros like EndeavourOS
• Fedora 33 and newer
• Debian 11 Bullseye, Testing and Unstable
• openSUSE Tumbleweed and Leap 15.3
• macOS 10.13 and newer
• Windows 10 or 8.1 (7 may also work)

Tools and other stuff used by this script

• cURL
• bspatch
• ipwndfu - LukeZGD fork
• iPwnder32 - dora2ios
• daibutsuCFW - dora2ios
• libimobiledevice - libimobiledevice
• libirecovery - libimobiledevice
• imobiledevice-net - libimobiledevice-win32 (macOS build)
• idevicerestore - LukeZGD fork
• ipsw tool from xpwn - LukeZGD fork
• Python 2 (for ipwndfu, rmsigchks, SimpleHTTPServer)
• tsschecker - tihmstar
• tsschecker - 1Conan fork (Windows build)
• futurerestore used for 32-bit devices - tihmstar
• futurerestore used for A7 devices - m1stadev fork
• kloader
• kloader5 for iOS 5
• kloader_hgsp for iOS 10
• partial-zip
• 32-bit bundles are from OdysseusOTA, OdysseusOTA2, alitek12, gjest
• A7 patches are from MatthewPierson
• EtasonJB
• p0sixspwn