kurouta dori

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Q: What is kurouta dori?
A: kurouta dori is a tool that allows you to downgrade your iOS device to any version you want, tethered or untethered (A valid SHSH blob is required for untethered downgrades).

Q: What is a SHSH blob?
A: SHSH blob is a file generated by Apple that signs a specific iOS version. It can only be obtained while Apple is still signing that version. SHSH blob is required for untethered downgrades and are uniquely tied to each device.

Q: What is the difference between tethered and untethered downgrades?
A: A tethered downgrade requires connecting the device to a computer every time it boots, but it does not require a valid SHSH blob. An untethered downgrade functions like a normal system boot without requiring a computer, but it does require a valid SHSH blob.

Q: What devices are supported?
A: Devices with A6 to A6X chips running iOS are supported. A5 devices and earlier, or A7 devices and later, will never be supported. If you are looking for a downgrade tool for A9-A10X, please see here.

Q: What iOS versions are supported?
A: All iOS versions that the supported devices have previously run are supported. Note that tethered downgrades may have a more limited range of supported versions.

Q: How does this differ from other tools?
A: This allows you to perform a tethered downgrade to iOS 10. Also, This tethered downgrade works with very minimal patches.

Q: Where can I find [L]GPL source code?
- LGPL sources are here >> libirecovery libfragmentzip libimobiledevice libimobiledevice-glue libplist libtatsu libusbmuxd
- GPL source is here >> idevicerestore

Q: Where can I find the usage instructions?
A: Here

Q: How should I report a discovered issue?
A: Please report it here: GitHub Bug Tracker

Made by

kok3shidoll

Thanks to

axi0mX

iH8sn0w

Jonathan Seals

planetbeing

Pierre-Marc Bonneau

Siguza

tihmstar

xerub

libimobiledevice