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Tutorial:Creating a NOR-only IPSW

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Revision as of 00:50, 26 June 2011 by 5urd (talk | contribs) (now uses # and better wording on the NOTE)
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This will flash your device to NOR-only

  1. Create a custom ipsw
  2. Unpack it, remove rootfs dmg
  3. Decrypt the ramdisk (xpwntool) and mount it.
  4. Edit options.plist (/usr/local/share/restore/options.plist) on the restore ramdisk:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd%22>
<plist version="1.0">
<dict>
   <key>CreateFilesystemPartitions</key>
   <false/>
   <key>UpdateBaseband</key>
   <false/>
   <key>SystemImage</key>
   <false/>
</dict>
</plist>
  1. Unmount and reencrypt the restore ramdisk.
  2. Repack the IPSW.

NOTE: This technique only works on devices vulnerable to the 2kPwn bootrom exploit.

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