MuscleNerd has released the beta version of his iOS 4.2.1 untethered jailbreak, which the Dev-Team is pushing out this weekend ahead of @comex’s more extensible method. As of right now MuscleNerd is looking for more Mac users to test the utility so if you have an iPhone 4, iPod Touch 4G, or iPad and are interested in RedSn0w 0.9.7b1 and a Mac, you may want to consider testing. Be aware though, since it is beta code it’s very possible that things can go wrong so make sure you have all your media backed up just in case. You will need to have 4.2b3 SHSH hashes saved on Cydia (no pirate versions of these!) and if you are using the Ultrasn0w carrier unlock, we would recommend that you just avoid this beta for now until further notice.

Below are some of the notes from the Dev-Team Blog:

• 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!

[Source: iPhone Dev Team (blog)]

Authors: TechHead

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