iPhone Dev-Team Successfully Untethers iOS 4.2.1 Jailbreak [Video] [Update x2]

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Posted December 8, 2010 at 11:16am by iClarified

The iPhone Dev-Team has announced that they have successfully untethered the jailbreak for iOS 4.2.1 for those with their 4.2b3 hashes saved.

MuscleNerd recently tweeted, Got "backup plan" for untethered 4.2.1 JB working (video coming up). Uses mysterious 4.2b3 hashes Cydia kept for you.

(It's a "backup plan" because comex is working on a more extensible one, but this method is also generalizable)

We'll keep you up to date with more information as it develops.

Update:
MuscleNerd has confirmed that this will work with AppleTV 2G 4.2.1 too.

Update x2:
Comex has said that we'll get an untethered jailbreak by Christmas.

iPhone Dev-Team Successfully Untethers iOS 4.2.1 Jailbreak [Video] [Update x2]

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Comments (40)

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john - December 19, 2010 at 9:36pm

all i want for xmas is a 4.2.1 untethered jailbreak for iphone 4. but really i want it sooner, like now :)

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irax - December 10, 2010 at 2:48pm

thats great, will wait for xmas

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News Talk - December 9, 2010 at 1:40pm

------This is tipical Cat and Mouse situation, look look 35000 hits in one day. iclarified makes Money , they deserve it let it wait. It is same with girls you want them but as soon as you got them , you want another firmware update...

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Genius Talk - December 9, 2010 at 1:44pm

So Funny Sounds Like Pro , I know you want me ....

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Apple Juice - December 9, 2010 at 1:46pm

No Comments :)

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TheRose - December 8, 2010 at 2:37pm

Off topic but need some help from you guys. How about 3GS with 4.0.1 and 5.13.4. Wt can I use to jb and UL? I tried to post this earlier but got no replies. Thanks

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Thatcher - December 8, 2010 at 2:57pm

If you need to know what jailbreak/Unlock you need you can check out iClarified's step by step guide here: https://iClarified.com/jailbreak Simply select your device, Firmware and OS....Easy!

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TheRose - December 8, 2010 at 3:00pm

Wait I left out that I want to upgrade to 4.2 and I hv old bootrom

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Thatcher - December 8, 2010 at 3:05pm

There is a way.....But this is not the safest way and you will definitely invalidate your warranty. It involves installing a iPad baseband which is very detectable by apple. I would wait

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TheRose - December 8, 2010 at 3:07pm

I know that but it seems risky even though my warranty expired. Can pwnagetool upgrade my phone while preserving my bb?

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Thatcher - December 8, 2010 at 3:28pm

No, it installs a custom iPad Baseband. it isn't excluded from the upgrade as Apple introduced a BB check on firmware 4.2.1

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TheRose - December 8, 2010 at 4:03pm

I think it's risky because if I upgrade to a iPad bb then then wt happen if apple release a new version with old bb. I'm scared of not being able to go back. So in conclusion with 3GS old bootrom 4.0.1 bb 5.13.4 if I need to UL, I either upgrade to the iPad bb or wait? And wait for wt specifically, redsn0w bundle? Comex? Pwnagetool bundle then redsn0w?

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cichicean - December 9, 2010 at 2:59am

Don't even think about iPad BB upgrade, sooner or later you will brick your iPhone, the same thing has happened about two years ago with iPhone 2G "no imei, no wifi, no bt". Then, new iPhone version will come out and everyone will focus on that, you will remain with a nice, shiny and expensive paper weight. Seems like dev team don't care about all the problems they caused in the past.

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teraflow - December 8, 2010 at 2:26pm

What if I have a just bought iPhone 4, running iOS 4.1, Will I be able to upgrade to 4.2.1 and unlock it without tethering it? Thanks in advance...

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Thatcher - December 8, 2010 at 3:00pm

At the moment, the only devices that aren't tethered are older NON MC models. This does not include the iPhone 4. If you want my advice, stay on 4.1 until there is a fully untethered version of the Jailbreak.

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teraflow - December 8, 2010 at 3:48pm

Thanks, I'll do that Quick question, will I be able to unlock it on iOS 4.1? I don't know what baseband it's running since I didn't receive it yet, but I think it's running the 4.1 one Thanks!

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Matej - December 8, 2010 at 5:57pm

Dont do anything! Just wait for all goodies and tutorials on iclarified and that upgrade.

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pimp - December 8, 2010 at 5:59am

But what if you didnt save any 4.2 beta 3 blobb hashes? Are you F#cked? I only saved 4.1? WTF? What do I do now?

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Udo - December 8, 2010 at 6:33am

Suicide.

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Thatcher - December 8, 2010 at 6:42am

Open Cydia, If it says 4.2b3 you're ok If not you're not so lucky!

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Matej - December 8, 2010 at 7:48am

Downgrade to 4.1 and use tinyumbrella to save shsh. And you will have saved for 4.2.1. I did that 1 hour ago. ;)

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Thatcher - December 8, 2010 at 8:32am

That won't help. You need the 4.2b3 SHSH in order to use this untethered jailbreak. Even if you have 4.2.1 or 4.1 it won't help.

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micked - December 8, 2010 at 5:44pm

I beleve you can still get your 4.2b3 shsh. try firmwareumbrella. tried it on an newer before jailbroken iphone and got shsh for 4.2.1 and 4.2b3 just an hour ago.

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jose - December 9, 2010 at 7:13am

this is a stupid question iphone 3 g or 3gs is a 3g system and is an iphone 4 a 4g system and also where cad i find 6.15 thank for reply

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Genius - December 8, 2010 at 5:45am

What does this mean for people who need an unlock? My iPhone 3GS is on iOS 4.1 with baseband 05.14.02 and I'm not interested in using the weird and risky iPad frankenphone method

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mat - December 8, 2010 at 8:48am

THEY JUST CANNOT DO IT !!!!! APPLE WON !!!!!! END GAME !!!!

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JC - December 8, 2010 at 12:29pm

At the moment, it doesn't really mean anything for us unlockers. It might mean something If (and only IF) they succeed at unlocking 4.2.1, although it seems they're really not putting that much effort into it. If they do unlock it, however, this unthether jailbreak will mean that we will be able to restart our devices without having to connect it to our computers to preserve the hack. Since the unlock is not out, though, this news doesn't really apply to us at the moment.

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Genius - December 8, 2010 at 12:46pm

Correct my jargon please - isn't it a *jailbreak* for iOS 4.21 and an *unlock* for baseband 05.14.02 or 06.xx.xx? I'm comfortable with the jailbreak at iOS 4.1 and don't particularly feel like I need to upgrade to 4.2x. What I need is for 05.14.02 or later to be unlocked. But anyway, I also got the impression that they're not focusing on 4.21. Does that mean I'm going to have to wait for iOS 4.3? Is there some way to track what they're working on / expected arrival dates for future or current jailbreak/unlock projects, so I can estimate when I'll be able to unlock my iPhone?

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Thatcher - December 8, 2010 at 3:03pm

Great comeback there.......just great :-|

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sh4508 - December 8, 2010 at 3:54am

@Musclenerd ipt4g 4.2.1 untethered JB w/4.2b3 kernel: http://is.gd/inE4e ... Wastes no exploits, but upcoming @comex JB maybe better

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Jeff - December 8, 2010 at 3:25am

Yea, Crank-Yankers..... I got a plan to... Talk is cheap.. BREAK it out so we can get it done...

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Jeff - December 8, 2010 at 1:41pm

Cool a Unteatherd Before Christmas.. Just Waiting to get the iPAD updated