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This project forked from lukezgd/legacy-ios-kit
Downgrade/restore and jailbreak iOS devices to signed OTA firmwares
License: GNU General Public License v3.0
Shell 99.43%
Batchfile 0.57%
ios-ota-downgrader's Introduction
- (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
- 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
- Identify your device here
- 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 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:
- 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
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