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A program created by iH8sn0w, that is used for S5L8900 devices, which include:

What is iREB?

iREB is a GUI application that uses iDevice and dfu-util. It uploads 3 pwned files, so that iTunes can accept custom IPSW firmware/downgrade to lower firmwares.


iREB does NOT jailbreak, it just disables iTunes's ability to upload a patch to the ramdisk to block custom firmware made by PwnageTool.

Current Developers

  • iH8sn0w (Windows + Mac)
  • w3st05 (Windows)
  • JohnnyFranks67 (Mac)

Compatible Operating Systems:

Windows XP/Vista/7
Mac OS X 10.4/10.5/10.6


3.1-3 (Windows ONLY for now!)

  • Added iPhone 3G[S] 3.1 SHSH Grabber
  • More Stable
  • Added Credits

3.1 (Windows ONLY for now!)

  • Added GUI
  • Added Recovery Mode Loop Fixer
  • Fixed Bug from 2.2
  • Removed Popups
  • Removed Command Prompt's


  • Added Support for 3.1(7C144)/3.1.1(7C145)
  • This version contains a bug, that will be fixed.
  • Improved GUI (Windows)
  • Added a bit more User-Friendly GUI (Mac)
  • Snow Leopard compatibility (Mac)


  • Added GUI
  • All 3 supported devices are implemented.


  • No longer required to rename ipsw to ih8sn0w.ipsw (Windows)
  • No longer required to move ipsw to C:\ (Windows)


  • Initial Release