Legacy-iOS-Kit/README.md

Legacy iOS Kit

• (formerly iOS-OTA-Downgrader)
• A multi-purpose script to save SHSH blobs, downgrade/restore, and jailbreak supported legacy iOS devices
• Linux, macOS, and Windows are supported
  • Windows usage is not recommended
• Read the "How to Use" wiki page for usage instructions
• Read the "Troubleshooting" wiki page for tips, frequent questions, and troubleshooting

Features

• Restore to iOS 8.4.1 or 6.1.3 on supported 32-bit devices (OTA signed)
• Restore iPhone 4 GSM (iPhone3,1) to unsigned iOS versions (powdersn0w)
• Restore to iOS 10.3.3 on supported A7 devices (OTA signed)
• Option to jailbreak iOS 6.1.3 and 8.4.1 restores
• Restore to unsigned iOS versions with SHSH blobs
  • Supports 32-bit devices, iOS 5 to 10
  • Supports A7/A8 devices, see SEP/BB Compatibility Chart
  • Also supports iPad 2 iOS 4.3.x, iPhone 4 iOS 4.x
• Restore to unsigned iOS versions with iOS 7.1.x blobs (powdersn0w)
  • Device support is limited, see below
• The latest baseband will be used for 32-bit devices if applicable
• Place device to pwned iBSS/kDFU mode for 32-bit devices
• Clear NVRAM for devices that support powdersn0w
• Restore iPhone 4 to iOS 7.1.2 with the option to jailbreak
• Restore supported devices to their latest iOS version
• Save onboard and Cydia SHSH blobs for 32-bit devices
• Boot SSH Ramdisk on supported 32-bit devices

Supported devices

• Identify your device here
• Restoring with powdersn0w supports the following devices:
  • iPhone 4 GSM - iOS 4.3 to 6.1.3
  • iPhone 4S, iPhone 5 (not 5C), iPad 2 Rev A, iPod 5th generation - iOS 5.0 to 6.1.3, 8.0 to 9.3.5
  • Using powdersn0w requires iOS 7.1.x blobs for your device
• iPhone 5C and iPad mini 3 devices are NOT supported by OTA downgrades
  • These devices still support restoring to other iOS versions with SHSH blobs
• See the table below for OTA downgrading support:

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)

Supported OS versions/distros

Supported architectures: x86_64, arm64, armhf (Linux)

• Ubuntu 22.04 and newer, and Ubuntu-based distros like Linux Mint
• Arch Linux and Arch-based distros like EndeavourOS
• Fedora 36 and newer
• Debian 12 Bookworm and newer, Sid, and Debian-based distros
• openSUSE Tumbleweed
• Gentoo and Gentoo-based distros
• macOS 10.13 and newer
• Windows 8.1 and newer

Tools and other stuff used

• curl
• bspatch
• powdersn0w_pub - dora2ios; LukeZGD fork
• ipwndfu - axi0mX, Linus Henze, synackuk; LukeZGD fork
• ipwnder_lite - dora2ios (used on macOS)
• iPwnder32 - dora2ios (old version with libusb, used on Linux)
• gaster - 0x7ff
• daibutsuCFW - dora2ios; LukeZGD fork
• libimobiledevice, libirecovery - libimobiledevice
• tsschecker - tihmstar; 1Conan fork v413
• futurerestore - tihmstar;
  • LukeZGD fork used on Linux for restoring 32-bit devices
  • LukeeGD fork used on Linux/Windows for restoring A7/A8 devices
  • futurerestore v259 used on macOS
• iBoot32Patcher - dora2ios fork
• idevicerestore - libimobiledevice; LukeZGD fork
• idevicererestore from daibutsuCFW (used on custom IPSW restores for A5/A6 devices)
• kloader from Odysseus
• kloader from axi0mX (used on iOS 4/5 only)
• kloader_hgsp from nyan_satan (used on h3lix only)
• partial-zip
• zenity; macOS/Windows builds
• 32-bit bundles from OdysseusOTA, OdysseusOTA2, alitek12, gjest (modified bundles for daibutsuCFW)
• A7 patches from MatthewPierson
• iPad 2 iOS 4.3.x bundles from selfisht, Ralph0045
• EtasonJB
• Pangu
• p0sixspwn
• unthredeh4il
• SSH Ramdisk tar from SSH-Ramdisk-Maker-and-Loader
• Bootstrap tar from SpiritNET