Tethered downgrade 64-bit iDevices vulnerable to checkm8

Since the purpose of this tool is to tethered downgrade a device, after restoring please use one of the tools listed below to tethered boot it:

• Ramiel
• PyBoot
• ra1nsn0w

ra1nstorm now supports downgrading untethered from any iOS to iOS 10.3.3 on some A7 devices

YOU are fully responsible to any data loss or damaged cause to your device while using ra1nstorm

usage: ra1nstorm iPSW [-u] [-s PATH] [-t BLOB]

ra1nstorm - Tethered downgrade 64-bit iDevices vulnerable to checkm8

positional arguments:
  iPSW                  iPSW file used for restoring

optional arguments:
  -h, --help            show this help message and exit
  -t BLOB, --blob BLOB  Manually specify SHSH used for restoring (SHSH will be
                        automatically saved if this argument is skipped)
  -s PATH, --save-log PATH
                        Specify path for saving futurerestore log
  -u, --update          Keep data while restoring (Untested)

All iOS versions from iOS 11 - iOS 14 are supported

NOTE: Due to SEP limitation, you can only restore to an iOS version which its SEP firmware is still being signed

• A computer running macOS
• 3 gigabytes free space on the computer
• 64-bit iDevice (vulnerable to checkm8)
• Binaries:

1. futurerestore(fork) (you can use futurerestore-compiler to compile it)
2. img4tool
3. img4 (img4lib)
4. kairos
5. iBoot64Patcher
6. ldid
7. Kernel64Patcher
8. asr64_patcher
9. tsschecker

After downloading the binaries above, you have to move them to PATH (e.g. /usr/local/bin)

• Python3
• Install ra1nstorm requirements: pip3 install -r requirements.txt

There are 2 ways for you to get support:

1. Open an issue
2. Join my Discord server

• Special thanks to m1stadev for wikiproxy and buildmanifest parser
• mcg29 for kerneldiff