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Difference between revisions of "Preventing Baseband Update"
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| − | # Unpack |
+ | # Unpack Custom IPSW |
# Decrypt Restore Ramdisk using [[xpwntool]] and mount it |
# Decrypt Restore Ramdisk using [[xpwntool]] and mount it |
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# Navigate to /usr/local/share/restore |
# Navigate to /usr/local/share/restore |
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Revision as of 01:29, 8 December 2010
- Unpack Custom IPSW
- Decrypt Restore Ramdisk using xpwntool and mount it
- Navigate to /usr/local/share/restore
- Edit options.plist on the restore ramdisk
(Ignore the SystemPartitionSize in your plist file and leave it)
<?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>UpdateBaseband</key>
<false/>
</dict>
</plist>
- Reencrypt the restore ramdisk
- Repack the IPSW
- Prepare device for custom firmware using redsn0w Just enter pwned DFU option
- Restore IPSW to iTunes in pwned DFU Mode
This method works on iOS 4.2.1
This won't work with original IPSW. Pwned DFU mode doesn't patch sigchecks in iBSS, so the ramdisk won't load. You need to load patched iBSS/iBEC for this to work.
