Minutes after the official release of iOS 4.2.1, the folks at the iPhone Dev Team were able to roll out a compatible jailbreak tool for those enjoying the benefits of a hacked device. A compatible version of Cydia is unavailable for the latest iOS right now, but the jailbreak is, in all senses, a go for iPhone, iPod touch, and iPad using the Team’s redsn0w 0.9.6 beta 4.
Before users proceed with following the steps below, Pctipsbox would like to note that jailbreaking is not particularly encouraged.
Also, see this post for compatible devices and the particularities involving each device model with respect to this jailbreak. For example, this is a “tethered” jailbreak which, for some, may involve hassle they’d rather avoid. Go here to learn more about the drawbacks involved by a “tethered jailbreak.”
With all that out of the way….
An unlock for iOS 4.2.1 is almost ready to go, signals iPhone Dev Team member Musclenerd, via Twitter. Apparently, Apple tried to block their ultrasn0w unlock tool via “aggressive compiler optimization,” but the Team was able to crack it and is gearing up to release a new version that will do the trick for iOS 4.2.1 users, albeit only for those wielding an old-generation handset.
“Finally got ultrasn0w working fully on 4.2.1,” Musclenerd writes on Novemver 27. “Apple inadvertently(!) broke ultrasn0w via aggressive compiler optimization,” the hacker explains.
In a separate note that hit the micro blogging service just minutes ago, Musclenerd adds: “When we update ultrasn0w today, 100’s of thousands (maybe millions?) will see red badge. Trying to make it safe for all.” More »
The latest update from the famous hackers, titled “Thanksgiving with Apple”, reveals that “The best news of all is for owners of iPhone3G, older iPhone3GS, and non-MC iPod touch 2G.”
The Team explains that, “Due to a combination of our original pwnage2 exploit, the arm7_go exploit, 24kpwn, and limera1n, your device is “just as jailbreakable as ever.” You reap the full benefit of an untethered 4.2.1 jailbreak.”
However, the same thing cannot be said about owners of a new-generation device, or “more decent devices”, as the Team likes to call them.
There’s good news and bad news here as well.
For starters, the Team claims that “due to geohot’s limera1n exploit, all recent devices can be jailbroken (this will be true until Apple released new hardware that fixes geohot’s limerain exploit in the bootrom).” More »
With the iOS 4.2 launch closing in, iDevice owners must be well prepared when accepting the software update. Those who rock a clean device at all times only have to worry about backups. Those who like living on the edge by hacking their units must be twice as careful when downloading the iOS 4.2 IPSW file from Cupertino.
In September, Apple offered a sneak peek of iOS 4.2, confirming that the software update would arrive in November.
The release specifically targets the iPad with key new additions like multitasking, Game Center, application folders, mail application enhancements, iAds, and more.
iOS 4.2 is believed to alleviate a number of issues experienced by iPhone 3G users, as well as problems encountered by iPod touch owners running iOS 4. More »