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Difference between revisions of "Tutorial:Creating a NOR-only IPSW"

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(the 3G doesn't have different bootroms, so this is not plural, but the 3GS instead)
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This will create an [[IPSW File Format|IPSW]] that only flashes your device's [[NOR]]. It will not touch the [[iOS|operating system]] or [[NAND]].
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1. Create a custom ipsw
  
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# Create a custom IPSW
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# Unpack it, remove rootfs DMG
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# Decrypt the ramdisk ([[xpwntool]]) and mount it.
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# Edit options.plist (/usr/local/share/restore/options.plist) on the restore ramdisk:
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
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<plist version="1.0">
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<dict>
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<key>CreateFilesystemPartitions</key>
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<false/>
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<key>UpdateBaseband</key>
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<false/>
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<key>SystemImage</key>
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<false/>
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</dict>
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</plist>
   
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<ol start="5">
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2. Unpack it, remove rootfs dmg
  
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<li>Unmount and reencrypt the restore ramdisk.</li>
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<li>Repack the IPSW.</li>
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</ol>
   
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NOTE: This technique only works on devices that have an untethered bootrom exploit ([[Pwnage]] or [[0x24000 Segment Overflow]]).
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3. Decrypt ramdisk (xpwntool), mount it.
  
   
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[[Category:Tutorials]]
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4. Edit options.plist on the restore ramdisk:
  
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/usr/local/share/restore/options.plist
  
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<pre>&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
  
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&lt;!DOCTYPE plist PUBLIC &quot;-//Apple//DTD PLIST 1.0//EN&quot; &quot;http://www.apple.com/DTDs/PropertyList-1.0.dtd&quot;&gt;
  
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&lt;plist version=&quot;1.0&quot;&gt;
  
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&lt;dict&gt;
  
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&lt;key&gt;CreateFilesystemPartitions&lt;/key&gt;
  
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&lt;false/&gt;
  
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&lt;key&gt;UpdateBaseband&lt;/key&gt;
  
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&lt;false/&gt;
  
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&lt;key&gt;SystemImage&lt;/key&gt;
  
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&lt;false/&gt;
  
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&lt;/dict&gt;
  
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&lt;/plist&gt;
  
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</pre>
  
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5. Unmount and reencrypt the restore ramdisk.
  
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6. Repack the ipsw.
  
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NOTE: It just works with iPod Touch 2G MB and iPhone 3GS old bootrom
  

Latest revision as of 12:18, 27 August 2013

This will create an IPSW that only flashes your device's NOR. It will not touch the operating system or NAND.

  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">
<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 that have an untethered bootrom exploit (Pwnage or 0x24000 Segment Overflow).

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