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Legacy-iOS-Kit/README.md
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# Legacy iOS Kit
- (formerly iOS-OTA-Downgrader)
- **A multi-purpose script to save SHSH blobs, downgrade/restore, and jailbreak supported legacy iOS devices**
- **Linux and macOS** are supported
- Windows usage is not recommended, many features will not work
- **Read the ["How to Use" wiki page](https://github.com/LukeZGD/Legacy-iOS-Kit/wiki/How-to-Use) for usage instructions**
- **Read the ["Troubleshooting" wiki page](https://github.com/LukeZGD/Legacy-iOS-Kit/wiki/Troubleshooting) 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 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 7.1.x blobs (powdersn0w)**
- For iPhone 5 (not 5C), 7.0.x blobs can also be used
- Device support is limited, see below
- Option to **jailbreak** all of the above devices
- Including latest iOS versions for some devices (4.2.1, 5.1.1, 6.1.6, 7.1.2)
- There are two methods of jailbreaking: Custom IPSW and SSH Ramdisk
- Available on target versions 3.2.2, 4.0.x, 4.1, 4.2.x, 4.3.x, 5.x, 6.x, 7.x, and 8.4.1
- Jailbreaking iPad 2 on 4.3.x is not supported (only 5.x and newer will work)
- 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
- The latest baseband will be flashed for 32-bit devices if applicable
- 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
- Dumping and stitching baseband to IPSW (requires `--disable-bbupdate`)
- Dumping and stitching activation records to IPSW (requires `--activation-records`)
## 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:
<table>
<thead>
<tr>
<th>Target Version</th>
<th>Supported Devices</th>
</tr>
</thead>
<tbody>
<tr>
<td rowspan=4>iOS 10.3.3</td>
<td><b>A7 devices:</b></td>
</tr>
<tr><td>iPhone 5S</td></tr>
<tr><td>iPad Air 1</td></tr>
<tr><td>iPad mini 2 (except iPad4,6)</td></tr>
<tr>
<td rowspan=6>iOS 8.4.1</td>
<td><b>32-bit devices:</b></td>
</tr>
<tr><td>iPhone 4S</td></tr>
<tr><td>iPhone 5</td></tr>
<tr><td>iPad 2, iPad 3, iPad 4</td></tr>
<tr><td>iPad mini 1</td></tr>
<tr><td>iPod touch 5</td></tr>
<tr>
<td rowspan=2>iOS 6.1.3</td>
<td>iPhone 4S</td>
</tr>
<tr><td>iPad 2 (except iPad2,4)</td></tr>
</tbody>
</table>
- Restoring with SHSH blobs and using SSH Ramdisks are supported on the following devices:
- Supports most 32-bit devices (iOS 3 to 10, version range depends on device)
- iPhone 3GS, 4, 4S, 5, 5C
- iPad 1, 2, 3, 4, mini 1
- iPod touch 2, 3, 4, 5
- S5L8900 devices will likely never be supported
- 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 6.1.3
- iPhone 4 CDMA - targets iOS 5.0 to 6.1.3
- iPhone 4S, 5, 5C, iPad 2 Rev A, iPod touch 5 - targets iOS 5.0 to 9.3.5 (not iOS 7)
- Using powdersn0w requires iOS 7.1.x blobs for your device (7.0.x can also be used for iPhone 5)
- 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 4.0
- Restoring to latest iOS version with jailbreak for the following devices:
- iPhone 4 - iOS 7.1.2 with Pangu
- iPhone 3GS, iPod touch 4 - iOS 6.1.6 with p0sixspwn
- iPad 1, iPod touch 3 - iOS 5.1.1 with pris0nbarake
- iPod touch 2 - iOS 4.2.1 with greenpois0n
## 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/) 36 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
- **Windows** 8.1 and newer
## 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)
- [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)
- [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/Windows 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_hgsp from nyan_satan](https://twitter.com/nyan_satan/status/945203180522045440) (used on h3lix only)
- [partial-zip](https://github.com/matteyeux/partial-zip)
- [zenity](https://github.com/GNOME/zenity); [macOS/Windows builds](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/)
- [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)
- [pris0nbarake](https://github.com/LukeZGD/pris0nbarake) - LukeZGD fork
- [greenpois0n](https://github.com/OpenJailbreak/greenpois0n/tree/0f1eac8e748abb200fc36969e616aaad009f7ebf)
- Some patches from [PwnageTool](https://www.theiphonewiki.com/wiki/PwnageTool) and [sn0wbreeze](https://www.theiphonewiki.com/wiki/sn0wbreeze)
- SSH Ramdisk tar 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)
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