We will be keeping this short and simple. The iPhone Dev Team has rolled out redsn0w 0.9.7b1 which brings what you have been longing for ever since iOS 4.2.1 went live – untethered jailbreak. The first beta of redsn0w 0.9.7 is based on the backup method which the team is calling Jailbreak Monte. Download link and other related details follows after the jump.

iOS 4.2.1 untethered jailbreak

redsn0w 0.9.7b1 Details

  • This is a beta tester program. It’s not a general release!  Things can go very wrong, so please don’t even consider testing if you have pictures or other media on your device that you haven’t backed up!
  • For the same reason, please don’t participate if you rely on the ultrasn0w carrier unlock.  Wait for the final version!
  • Until we fix some sandbox issues with bluetooth, the bluetooth functionality is disabled.
  • This very first beta1 is limited to iPhone4, iPad, and iPod touch 4G.
  • Cydia must have your 4.2b3 SHSH blobs saved on file.  (As we approach a general release, we’ll provide a way to let you use locally saved hashes too).
  • You must already have the usbmuxd software installed and running on your Mac (this requirement will eventually go away too). The correct invocation of the relay is just as that page says: “./tcprelay.py -t 22:2222”.  If the relay isn’t installed or running correctly by the time the redsn0w ramdisk has started, you’ll need to restore to stock FW again to try it again. Please test it beforehand to save yourself some time!

Known bugs of the Mac OS X only version are:

  • Task switcher causes Springboard crash (temporary workaround is to use SBSettings process list)
  • iPod player only works on ipt4g right now
  • Bluetooth currently disabled due to sandbox problem

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Download redsn0w 0.9.7b1 for Mac OS X

Update 1: Guide to get untethered jailbreak for iOS 4.2.1 using redsn0w 0.9.7b1 can be found here.

Update 2: redsn0w 0.9.7b3 which fixes the FaceTime bug is now available for download. Details here.

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