14 DAY TRIAL // An updated version of the redsn0w jailbreak utility for Mac OS X and Windows users has been released in the wild. The infamous iPhone Dev Team, the authors of the tool, warn that iOS 4.2.1 jailbreaking is rather tricky at the moment. The updated redsn0w targets jailbreak developers and tinkerers. According to the hackers, only the iPhone 3G, non-MC iPod touch 2G devices, and old-bootrom iPhone 3GS units are supported for the untethered jailbreak.
The Dev Team is currently at its third update to the original “redsn0w+limera1n fun” blog post. The edited report includes a warning for iOS device owners which goes “if you use the ultrasn0w unlock, please read no further…this doesn’t apply to you yet!”
“We’ve made some updates to redsn0w to make it easier for jailbreak developers (and tinkerers) to get their programs ready for 4.2.1,” the Team writes. “As noted above, the public version of Cydia (and MobileSubstrate too!) is not 4.2.1-compatible.”
The hackers confirm that redsn0w will now let users install their own custom bundles independent of Cydia. In fact, the Team notes, “the bundle can actually be Cydia if you’ve compiled it on your own.”
However, “it’s very important that you get the file permissions and ownerships right in your custom redsn0w bundles,” the Dev Team warns.
Finally, it reveals that “redsn0w has also been updated to recognize the 4.2.1GM IPSWs.”
A bunch of warning signs are also pinned around the iOS 4.2.1 jailbreak using redsn0w 0.9.6 beta 3. For starters: “the 4.2.x jailbreak is not yet untethered for most devices!”
“That means until someone like @comex comes up with a way to untether it, you must use redsn0w (or a similar utility) to boot your device into a jailbroken 4.2.1 state,” the Team elaborates, adding that “The only exceptions to this are the iPhone3G, non-MC iPod touch 2G, and old-bootrom iPhone3GS.
“redsn0w will jailbreak those untethered!”, the Team confirms.
The post also adds confirmation to a report issued by Redmond Pie last week, which revealed that Cydia for iOS 4.2.1 was not available.
“The Cydia that’s included in 0.9.6b3 is the same one as in 0.9.6b2, and so it will *not* work on 4.2.1. Don’t try installing it on 4.2.1! Instead, use the SSH bundle, or compile Cydia on your own.”
The post ends with a final warning: “PLEASE CONSIDER THIS AN ADVANCED TOPIC!! It’s not meant for the masses because it involves rather nerdy things like command lines and tar files. But for those who know how to use this new redsn0w feature, have fun!”