PwnageTool Bundles for jailbreaking iOS 4.3 beta has been released. The bundle can now be used with the existing version of PwnageTool to create custom firmware files for a semi-tethered jailbreak for the iPhone 4 on iOS 4.3 beta 1. Since iOS 4.3 is currently tagged as a beta, only those who have a membership for the iPhone Developer Standard or Enterprise Program can proceed jailbreaking their iPhone 4 firmware iOS 4.3. Follow the detailed guide listed below to learn how to jailbreak iOS 4.3 beta on iPhone 4 using PwnageTool.

Warning:

The method is a little complex and requires you to modify the restore Ramdisk manually. If you don’t know what you are doing, then stay away! We aren’t held responsible for you bricking your iPhone.

NOTE:

• For those of you who don’t already know, this version of PwnageTool (with custom bundles) will not preserve your baseband. If you rely on an unlock stay away from this release and proceed at your own risk only. We aren’t held responsible if you brick your iPhone.
• If you don’t have a valid developer’s certificate, and have the device registered with Apple as a provisioned development device, even the legitimate 4.3 beta will not activate once it is loaded.
• User’s will also have to edit the hosts file if the device has already been jailbroken to let the process verify with Apple’s servers, NOT Cydia’s. (Currently there is no way as of yet to save the 4.3 SHSH blobs to Cydia’s server, so all of the “Verification” and “authorizing” will have to be done legitimately, through Apple’s servers.)

Important:

• Make your own Ramdisk to be able to restore because PwnageTool makes a broken one. (Don’t restore just yet, instructions on how to create the Ramdisk.
• Updated Cydia is working on 4.2+.
• Your baseband is not upgraded during the restore process.
• You must boot tethered with “tetheredboot” to enjoy unsigned apps.
• Never run Cydia when you have booted untethered, this will make MobileSafari and others apps crash.

How To Jailbreak iPhone 4 iOS 4.3 Beta 1 Using PwnageTool:

• Download iOS 4.3 Beta 1 for iPad, iPhone and iPod Touch [Mirror 1]
• Download PwnageTool Patched Bundle For iOS 4.3 Beta 1 [Mirror 1] [Mirror 2]
• Download and install the latest version of iTunes.
• Follow the guide posted here to create iOS 4.3 custom firmware for iPhone 4 jailbreak.

Modifying the restore ramdisk manually for iOS 4.3 Jailbreak

Tools needed: OS X, xpwntool

• Unpack the original ramdisk: xpwntool orig_restore_rd.dmg restore_rd.dec.dmg -iv .. -k .. (use the keys from wiki)
• Mount the ramdisk: hdiutil attach restore_rd.dec.dmg
• Free up some space: rm /Volumes/ramdisk/(some unneeded large-ish file)
• Patch asr: mv /Volumes/ramdisk/usr/sbin/asr /tmp/; bspatch /tmp/asr /Volumes/ramdisk/usr/sbin/asr (bundle_path)/asr.patch
• Change the restore options: edit /Volumes/ramdisk/usr/local/share/restore/options.plist with Property List Editor, add ‘UpdateBaseband’ = false – see https://theiphonewiki.com/wiki/index.php?title=Preventing_Baseband_Update for details
• Unmount the ramdisk: hdiutil detach /Volumes/ramdisk
• Re-encrypt the ramdisk: xpwntool restore_rd.dec.dmg pwned_restore_rd.dmg -t orig_restore_rd.dmg -iv .. -k ..
• Replace the ramdisk inside of CFW produced by the Pwnage Tool with pwned_restore_rd.dmg You can either unzip and re-zip the CFW or replace it inside of /tmp/ipsw dir when PwnageTool is running.

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Authors: _GadgetNews

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