# Legacy iOS Kit - (formerly iOS-OTA-Downgrader) - **A multi-purpose script to downgrade/restore, save SHSH blobs, and jailbreak legacy iOS devices** - Supported on **Linux and macOS** - **Read the ["How to Use" wiki page](https://github.com/LukeZGD/Legacy-iOS-Kit/wiki/How-to-Use) for instructions** - **Read the ["Troubleshooting" wiki page](https://github.com/LukeZGD/Legacy-iOS-Kit/wiki/Troubleshooting) for tips, frequent questions, and troubleshooting** ## Features - Legacy iOS Kit supports all 32-bit iOS devices, and some A7/A8 64-bit devices - Restore to iOS 8.4.1 or 6.1.3 on supported 32-bit devices **(OTA signed)** - Restore iPhone 4 GSM and CDMA (iPhone3,1 and 3,3) to lower iOS versions **(powdersn0w)** - Restore iPhone 3GS and iPod touch 2 to lower iOS versions **(24Kpwn/alloc8)** - Restore 32-bit devices to lower iOS versions **with SHSH blobs** - Restore 32-bit devices to lower iOS versions **with iOS 7 blobs (powdersn0w)** - Device support is limited, see below - Hacktivation for iPhone 2G, 3G, 3GS (activate without valid SIM card) - Option to **jailbreak** all 32-bit iOS devices - Available on iOS versions 3.1.3, 3.2.2, 4.x, 5.x, 6.x, 7.x, 8.x, 9.1-9.3.4 - Only unsupported version is jailbreaking iPad 2 on 4.3.x - There are three methods of jailbreaking: Backup Restore (g1lbertJB, 5.0-6.1.2 only), Custom IPSW, and SSH Ramdisk - Restore to iOS 10.3.3 on supported A7 devices **(OTA signed)** - Restore A7/A8 devices to lower iOS versions **with SHSH blobs** - Limited compatibility due to SEP/BB, see below - Save onboard and Cydia SHSH blobs for 32-bit devices - Place device to pwned iBSS/kDFU mode for supported devices - Boot SSH Ramdisk on supported 32-bit devices - Clear NVRAM for devices that support powdersn0w - Device activation using ideviceactivation (useful for iOS 4 and lower) - The latest baseband will be flashed for A5(X)/A6(X) devices if applicable - Dumping and stitching baseband to IPSW (requires `--disable-bbupdate`) ## Supported devices - [Identify your device here](https://ipsw.me/device-finder) - **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 below - 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)
- Restoring with SHSH blobs, jailbreaking, and using SSH Ramdisks are supported on the following devices: - Supports all 32-bit iOS devices - iPhone 2G, 3G, 3GS, 4, 4S, 5, 5C - iPad 1, 2, 3, 4, mini 1 - iPod touch 1, 2, 3, 4, 5 - Restoring with SHSH blobs is also supported on most A7/A8 devices: - See [SEP/BB Compatibility Chart](https://docs.google.com/spreadsheets/d/1Mb1UNm6g3yvdQD67M413GYSaJ4uoNhLgpkc7YKi3LBs/edit#gid=1191207636) for iOS versions - iPhone 5S, 6, 6 Plus - iPad Air 1, mini 2, mini 3 - iPod touch 6 - Restoring with powdersn0w is supported on the following devices: - iPhone 4 GSM - targets iOS 4.3 to 7.1.1 - iPhone 4 CDMA - targets iOS 5.0 to 7.1.1 - iPhone 4S, 5, 5C, iPad 2 Rev A, iPad 4, iPod touch 5 - targets iOS 5.0 to 9.3.5 - Using powdersn0w requires iOS 7.1.x blobs for your device - For iPhone 5 and 5C, 7.0.x blobs can also be used - For iPad 4, only 7.0.x blobs can be used - Restoring with 24Kpwn/alloc8 is supported on the following devices: - iPhone 3GS - targets iOS 3.1.3 to 5.1.1 - iPod touch 2 - targets iOS 3.1.3 to 4.1 - Restoring to latest iOS version with jailbreak for the following devices: - iPhone 4 - iOS 7.1.2 - iPhone 3GS, iPod touch 4 - iOS 6.1.6 - iPad 1, iPod touch 3 - iOS 5.1.1 - iPhone 3G, iPod touch 2 - iOS 4.2.1 - iPhone 2G, iPod touch 1 - iOS 3.1.3 ## Supported OS versions/distros #### Supported architectures: x86_64, arm64, armhf - [**Ubuntu**](https://ubuntu.com/) 22.04 and newer, and Ubuntu-based distros like [Linux Mint](https://www.linuxmint.com/) - [**Arch Linux**](https://www.archlinux.org/) and Arch-based distros like [EndeavourOS](https://endeavouros.com/) - [**Fedora**](https://getfedora.org/) 37 and newer - [**Debian**](https://www.debian.org/) 12 Bookworm and newer, Sid, and Debian-based distros - [**openSUSE**](https://www.opensuse.org/) Tumbleweed - [**Gentoo**](https://www.gentoo.org/) and Gentoo-based distros - **macOS** 10.13 and newer (10.15 and newer recommended) ## Tools and other stuff used - curl - bspatch - [powdersn0w_pub](https://github.com/dora2-iOS/powdersn0w_pub) - dora2ios; [LukeZGD fork](https://github.com/LukeZGD/powdersn0w_pub) - [Exploits used are from kok3shidoll's repo](https://github.com/kok3shidoll/untitled) - [5C 7.0.x exploit is from Ralph0045's repo](https://github.com/Ralph0045/iloader) - [ipwndfu](https://github.com/LukeZGD/ipwndfu) - axi0mX, Linus Henze, synackuk; LukeZGD fork - [ipwnder_lite](https://github.com/dora2-iOS/ipwnder_lite/tree/7265a06d184e433989db640d5e83ea58d5862609) - dora2ios (used on macOS) - [iPwnder32](https://github.com/dora2-iOS/iPwnder32/tree/243ea5c6d1bd15f8bdd0b3a1ff4a7729bc14bac4) - dora2ios (old version with libusb used on Linux) - [gaster](https://github.com/0x7ff/gaster/) - 0x7ff - [daibutsuCFW](https://github.com/dora2-iOS/daibutsuCFW) - dora2ios; [LukeZGD fork](https://github.com/LukeZGD/daibutsuCFW) - [daibutsu](https://github.com/kok3shidoll/daibutsu) - dora/kok3shidoll, Clarity - [libimobiledevice](https://github.com/libimobiledevice/libimobiledevice) - libimobiledevice - [libirecovery](https://github.com/libimobiledevice/libirecovery) - libimobiledevice - [libideviceactivation](https://github.com/libimobiledevice/libideviceactivation) - libimobiledevice - [tsschecker](https://github.com/tihmstar/tsschecker) - tihmstar; [1Conan fork](https://github.com/1Conan/tsschecker) v413 - [futurerestore](https://github.com/tihmstar/futurerestore) - tihmstar; - [LukeZGD fork](https://github.com/LukeZGD/futurerestore) used on Linux for restoring 32-bit devices - [LukeeGD fork](https://github.com/LukeeGD/futurerestore) used on Linux for restoring A7/A8 devices - [iBoot32Patcher](https://github.com/dora2-iOS/iBoot32Patcher/) - dora2ios fork - [idevicerestore](https://github.com/libimobiledevice/idevicerestore) - libimobiledevice; [LukeZGD fork](https://github.com/LukeZGD/idevicerestore) - [idevicererestore](https://github.com/LukeZGD/daibutsuCFW/tree/main/src/idevicererestore) from daibutsuCFW (used on custom IPSW restores for A5/A6 devices) - [kloader from Odysseus](https://www.youtube.com/watch?v=fh0tB6fp0Sc) - [kloader from axi0mX](https://github.com/axi0mX/ios-kexec-utils/blob/master/kloader) (used on iOS 4/5 only) - [kloader for iOS 5](https://www.pmbonneau.com/cydia/com.pmbonneau.kloader5_1.2_iphoneos-arm.deb) - [kloader_hgsp from nyan_satan](https://twitter.com/nyan_satan/status/945203180522045440) (used on h3lix only) - [jq](https://github.com/jqlang/jq) - [partialZipBrowser](https://github.com/tihmstar/partialZipBrowser) - [zenity](https://github.com/GNOME/zenity); [macOS build](https://github.com/ncruces/zenity) - 32-bit bundles from [OdysseusOTA](https://www.youtube.com/watch?v=Wo7mGdMcjxw), [OdysseusOTA2](https://www.youtube.com/watch?v=fh0tB6fp0Sc), [alitek12](https://www.mediafire.com/folder/b1z64roy512wd/FirmwareBundles), [gjest](https://www.reddit.com/r/jailbreak/comments/6yrzzj/release_firmware_bundles_for_ios_841_ipad21234567/) (modified bundles for daibutsuCFW) - A7 patches from [MatthewPierson](https://github.com/MatthewPierson/iPhone-5s-OTA-Downgrade-Patches) - iPad 2 iOS 4.3.x bundles from [selfisht, Ralph0045](https://www.reddit.com/r/LegacyJailbreak/comments/1172ulo/release_ios_4_ipad_2_odysseus_firmware_bundles/) - [sshpass](https://sourceforge.net/project/sshpass) - Bootstrap tar from [SpiritNET](https://invoxiplaygames.uk/projects/spiritnet/) - [Cydia HTTPatch](https://cydia.invoxiplaygames.uk/package/cydiahttpatch) for 3.1.3 downgrades/jailbreaks - [Pangu](https://www.theiphonewiki.com/wiki/Pangu) - [p0sixspwn](https://www.theiphonewiki.com/wiki/p0sixspwn) - [unthredeh4il](https://www.theiphonewiki.com/wiki/Unthredera1n#unthredeh4il) - [evasi0n](https://www.theiphonewiki.com/wiki/Evasi0n) - [g1lbertJB](https://github.com/g1lbertJB/g1lbertJB) - [UntetherHomeDepot](https://www.theiphonewiki.com/wiki/UntetherHomeDepot) - [greenpois0n](https://github.com/OpenJailbreak/greenpois0n/tree/0f1eac8e748abb200fc36969e616aaad009f7ebf) - Some patches from [PwnageTool](https://www.theiphonewiki.com/wiki/PwnageTool), [sn0wbreeze](https://www.theiphonewiki.com/wiki/sn0wbreeze), [redsn0w](https://www.theiphonewiki.com/wiki/redsn0w) - SSH Ramdisk tars from [SSH-Ramdisk-Maker-and-Loader](https://github.com/Ralph0045/SSH-Ramdisk-Maker-and-Loader) and [msftguy's ssh-rd](https://github.com/msftguy/ssh-rd)