Stefan Esser, iPhone hacking expert has already published a YouTube video, which shows an untethered iOS 4.3.1 jailbreak running on his iPod Touch 4G. And now iPhone Dev Team is testing the untethered jailbreak for iOS 4.3 / 4.3.1. Once they finish their beta testing, they will release it. Though the exploit was developed and showcased by Stefan to untethered jailbreak iOS 4.3 but he handed it over to iPhone Dev Team’s Musclenerd.
Here’s what he has tweeted.
From his tweet:
The iphone-dev-team is already beta-testing the untether. So it is up to them to give you your tool of choice.
Please don’t bother the dev-team now. The deal is: if the beta test is successfull, they are free to do whatever they want with it.
The exploit is now under beta testing by Dev Team and it is pretty much expected that they will release Redsn0w updated version to untether idevices on iOS 4.3.x. The exploit does not support iPad 2 jailbreak.
Stefan Esser has provided more details about his untethered jailbreak solution:
Meanwhile everyone should have noticed that my prediction became true and Apple released iOS 4.3.1 in order to fix the PWN2OWN vulnerability in Safari.
It was very unlikely that Apple also fixed the kernel vulnerability I used for my untether exploit. Mainly because the kernelcache binary is about 8-10 MB in size and the likelihood that Apple finds the same vulnerability in that short amount of time was very low.
However you never know until you try it. So this morning when I woke up and saw that Sn0wbreeze 2.4 beta was released I thought it would be fun to create a new video.
Unfortunately Sn0wbreeze does not work with my iPad 1 and so I had to test with my iPod 4G.
So I just used Sn0wbreeze to do a tethered jailbreak of my iPod 4G and then I manually installed the untether exploit with SSH.
In the video you can see how I switch off the iPod, then restart it, show the version, show that it is untethered and has the multitasking gestures, i show that you can buy ringtones and then I show cydia and the ninja jump game from last time.
Because several people misunderstood me in the past:
a. I repeatedly stated that I will not release a jailbreak tool – I will only give out the untether. I did not try yet, but if it is feasible the untether could be a cydia package.
b. While the vulnerability I use is in the iPad 2 kernel my untether will NOT SUPPORT the iPad 2, because there is no way to install it there (bootrom exploits fixed). – however Comex is working on that part.
c. I am not giving out any ETA again, because the Jailbreak community is simply nuts. Last time I gave an ETA and even before that had passed I got constantly insulted by people that were demanding an immediate release. Sorry guys the more you insult people with the knowledge to actually do what YOU WANT the less motivation there is to use our free time to give it to you.
d. The only reason why I did not finish the untether before the ETA was due to unexpected work overload in my real job. It had nothing todo with the untether being too hard or unreal.
e. I don’t know why the dev team has not released a redsn0w that does tethered jailbreak for 4.3.1 – I would prefer that to be available, cause sn0wbreeze obviously does not work 100% yet.
f. If you want to learn more about iPhone kernel hacking/exploitation you should come to SyScan Singapore at the end of April.http://syscan.org/index.php/sg/program
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