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Difference between revisions of "Preventing Baseband Update"
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This won't work with original IPSW. Pwned DFU mode doesn't patch sigchecks in [[iBSS]], so the [[Restore/Update Ramdisks|ramdisk]] won't load. You need to load patched [[iBSS]]/[[iBEC]] for this to work. |
This won't work with original IPSW. Pwned DFU mode doesn't patch sigchecks in [[iBSS]], so the [[Restore/Update Ramdisks|ramdisk]] won't load. You need to load patched [[iBSS]]/[[iBEC]] for this to work. |
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| + | == [[baseband]] [[SHSH]] block == |
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| + | because of thte iphone 4 needing [[baseband]] [[SHSH]] to update the baseband porting the host file to [[saurik]]'s server or running [[TinyUmbrella]] will allow this request for [[SHSH]] to be ignored |
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| + | # port the host file to [[Cydia Server|Saurik's Server]] server or run [[TinyUmbrella]] |
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| + | # update to 4.2.1 |
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| + | this will not work on pwnd [[firmware]] |
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[[Category:Baseband]] |
[[Category:Baseband]] |
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Revision as of 15:59, 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.
baseband SHSH block
because of thte iphone 4 needing baseband SHSH to update the baseband porting the host file to saurik's server or running TinyUmbrella will allow this request for SHSH to be ignored
- port the host file to Saurik's Server server or run TinyUmbrella
- update to 4.2.1
this will not work on pwnd firmware
