iDecrypt is a GUI front-end for VFDecrypt (resulting in this program breaking GNU GPL) for Windows /OS X. It's used to decrypt .DMG files, namely the rootfs of an IPSW file.

The tool is very simple to use. Here are the Steps:

  • Select file to decrypt

  • Enter key if not found automatically -- Get them from this wiki

  • Chose output folder

  • Click Decrypt DMG

  • Windows: Use 7-Zip to extract the DMG, then the biggest file

  • Mac: Mount the DMG






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