How to jailbreak iOS 4.2.1 iPhone, iPad untethered via greenpois0n [Mac users only]
Greenpois0n RC5 now allows you to jailbreak iOS 4.2.1 untethered on most devices including iPhone 4 and iPad. The best part? You won't need any SHSH blobs saved. redsn0w beta required you to have 4.2b3 blobs saved (and it was pretty unstable). Hopefully greenpois0n is going to be a much smoother experience for you guys. Hit the jump for a walkthrough on how to jailbreak iOS 4.2.1 with greenpois0n and for the answers to some commonly asked questions.
What devices will greenpois0n RC5 jailbreak?
- iPhone 4/3GS
- iPod Touch 2G/3G/4G
- AppleTV second generation
You'll need to be running iOS 4.2.1 in order for this version of greenpois0n to work (4.1.1 for AppleTV second generation users).
Should I do a full stock restore first?
In short, most likely. If you're already stock and haven't been jailbroken, you're fine. Still back up your phone first in case anything goes wrong.
If you are currently jailbroken on 4.1, yes. Do a full stock restore to 4.2.1 and restore as a new iPhone. After jailbreaking, I still don't recommend restoring from a backup. Old jailbreak pieces can come with your backup and cause issues for you. Just my personal recommendation.
If you are currently tethered on 4.2.1 via redsn0w, you should be able to just run greepois0n right over your current jailbreak to untether. Some of the devs are saying if you have issues installing Cydia via greenpois0n after running it, simply run redsn0w again and let it re-install Cydia. Basically, as long as you aren't running a Monte version jailbreak on 4.2.1, you should be able to run greenpois0n to untether.
Will this jailbreak iOS 4.3 beta?
No. You'll have to wait a bit longer on a tested jailbreak for 4.3.
Jailbreaking iOS 4.2.1 via Greenpois0n
- Download greenpois0n onto your Mac. (Some users have been reporting the servers being down. If you can't get it to download right away, just be patient. Their servers are probably just lagging from all the traffic. There are a few mirrors out there so be sure to check the comments for the latest updates on those.
- Plug your iPhone, iPod Touch, iPad, or AppleTV in via USB (make sure the power is off) and follow the on-screen instructions to enter DFU mode.
- Greenpois0n will recognize when your phone is properly in DFU mode and start to do its thing. After it's done, you'll see a Loader icon on your homescreen. Tap it and install Cydia. (Note: This only differs for AppleTV jailbreakers. You'll be done but need to continue accessing and installing apps via Terminal and SSH.)
- You're done! Restore all your stuff (if you choose to or were stock before) and enjoy being jailbroken!
Note: Some users in the comments have been reporting sometimes the initializing error is a result of not holding the home button long enough when entering DFU mode. Even when the text is not greyed out anymore, continue holding the home button if you're getting the Initializing error even after trying Greenpois0n RC5 version 2.
If you guys have already used this version of greenpois0n, let us know how it's going in the comments! Have other questions? Check our our Jailbreak Starters Guide and jailbreak forums!
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Iphone/ipad needs to be plugged in first and then turned off before the greenpois0n app is run. Next, follow the directions on the greenpois0n screen when you hit JAILBREAK button.
Unable to fing gBdevList
Unable to find fsmount
Unable to find fsunmount
Unable to find fsloadfile
And get stuck there.
I'm trying it on an already redwnow jailbroken phone.
When you use redsn0w to tethered boot, you are essentially re-jailbreaking everytime.
There are a lot of folks having issues with jailbreaking(modmyi.com forums or tipb forums). Mine worked because I plugged it in and then turned it off before I followed the onscreen instructions.
No need to be offensive in your tone.
If you can't read and comprehend, and act in accordance with instruction, you run the risk of borking your phone.
This has always been clear.
She's a blogger. It's not her job to coddle you.
This works, if done per instruction. The end.
I am not expecting coddling. Mine jb worked the first time while I know other's didn't.
I guess you woke up on the wrong side of the bed. You seem to be looking for a fight.
The point is that this is an incomplete "how to" for those unfamiliar with the process. It's always vague, presumptuous instructions like this, from aloof techies, that lead to people (who are unfamiliar) having problems. And to suggest that anyone, who isn't a mind reader, shouldn't be jailbreaking in the first place, is simply as arrogant as one can get.
There is zero point in posting an "almost how to". Period. :roll:
To all of you saying I wasn’t specific enough, no, I did not feel the need to retype what greenpois0n already clearly TELLS you to do in the on-screen instructions. If you can not follow instructions, I still stand by the fact you should not jailbreak. (And no, I do not suggest people that know nothing about jailbreaking to do it. read up on it first, that’s why we have beginner’s guides. Read those and come back to this post). Greenpois0n is an extremely easy tool to use if you follow the instructions.
I answered the most common questions and concerns, told you where to download greenpois0n, how to run it, etc… if you can not follow the instructions on screen, again, don’t jailbreak.
(and yes monk, i deleted your comment. if you can't post like an adult, i'll delete your comments.)
you 3 are out to pick a fight and nitpick. you win, I added "make sure the phone is powered off"
I also took a look around most other popular tutorials, they aren't much different than this one. the tool is easy to use. i'm not being arrogant in assuming all people are "techies". The tool really is that simple. Like I said, we have tons of beginners guides and tutorials for beginners (most of them written by me). If you didn't notice, those are also linked in the article, for that reason. Please don't assume anything. I help people consistently on twitter, in the forums, and via post ups. It's users like yourselves that make me NOT want to help people. Want to give me constructive criticism? That's perfectly fine. But if you can't act like an adult and choose your words appropriately, don't comment at all. Anything else rude or condescending will simply be deleted.
Sounds like there are many issues...
And if you save your 4.2.1 hashes now, there's a big chance you will be able to untether-jailbreak 4.3 once it is released through an updated redsn0w with the Monte technique included.
I assume they would not have released it if that was not the case, but one of the team members tweeted it- dont remember who.
Is this for Mac only? It says in these instructions to download to Mac, will it work with Windows?
the only thing worth updating for in 4.2.1 is find my iphone , other than that kind of a waste of time going through the whole process to update.
then send the contact file to your email. You can then import it back when you load your phone back up and it will install your packages again automatically.
greenpois0n wont care what old os you had, so long as you have 4.2.1 now.
I switched it off first carried out the jailbreak and it just keeps showing me a logo of the usb cable and iTunes.
WHat am I doing wrong?
If a device isn't listed there, what do you think?
thats my 2 cents.
The correct version is RC5 or RC5-2 respectively, and it has only been released for Mac at the moment, though a Windows version should come out soon.
Here's the URL: http://22.214.171.124/dl/greenpois0n-osxrc52.zip
I'm getting the same thing. I've tried several times. The process seems to go well and I get the message that the jailbreak is complete and the ipad reboots. I'm not seeing the loader icon. I think also this is supposed to be installing a modded apple icon at start-up which I'm not seeing. My guess is the process is not working but I'm not seeing any kind of error. I follow the prompts and hold the buttons and release at the specified time. Screen goes dark, greenpoison seems to recognize that iPad is in DFU mode and does it's thing. Some have suggested holding tho home button for an extended period beyond the point when it says completed but when i do that eventually I just end up with the plug into itunes screen on the iPad which means, I think, that it has gone into recovery mode.
I've tried this, probably 8-10 times and something is obviously wrong.
is that the reason there is no icon and the missing files as well?
I did it and had the Loader icon (on the last page) the first time, just nothing inside of it as of yet.
Guide is perfectly fine. Jailbreaking, while not rocket science, isn't for everyone. Update link to new RC5, pat yourself on the back, and call it good. Following guide worked for me and my non-noob friends. Thanks for the post!
Would you mind providing an update that explains that some users may have to hold the home button the entire time that greenpois0n is jailbreaking? I was one of those users, but I did use what resources I already had at my fingertips to find the solution (hint/wink to all who are not using the CPU in front of you to HELP YOURSELF). I assumed (as I'm sure many others did) that when the text un-bolded, that that meant I could stop performing that action, seeing as that's how it performed whilst performing the entrance into DFU mode. I have seen a lot of comments/blogs/tweets/WHATEVER stating that they get the four lines and the "greenpois0n initialized" screen, as I experienced.
Just a thought...
Why would this be released if everyone was going to have issues with it?
I do greatly appreciate the work they do. Has anyone found a way around this?
has worked for me...
Please make sure that you're connected to the internet before launching loader'
I click on dismiss as its the only option here. Then only option available is to 'remove loader.app or cancel in options for open loader app.
When i start greenpois0n and click to jailbreak it goes do DFU mode then the loader bar starts to work and after 5 of 10 seconds my Ipad restart and then i get the Connect to iTunes on my screen.
Can anyone Help??
Unable to find gBdevList
Unable to find fsmount
Unable to find fsload_file
The official site was offline so I just got it through a torrent site.
So if I jailbreak can restore my backup on iPhone 3GS. That way I can have all my apps and so I won't have to re-complete the games?
After you complete upgrade/jailbreak, Click on Sync App.
All Apps and Saved games will remains
Will this jailbreak iOS 4.3 beta?
No. You’ll have to wait a bit longer on a tested jailbreak for 4.3.
It should read:
Will this jailbreak iOS 4.3 beta?
No. You’ll have to wait until just before the release of 4.4 on a tested jailbreak for 4.3.
The most important part is timing. Make sure that the top right button is "sleep" and the round one on the face is "home", yes a bit confusing for a very old man like me.
Unable to find gBdevList Unable to find fsmount Unable to find fsload_file Greenpoison initialized
Does that mean I should restore my phone from the backup I made right before I jailbroke? or should I just leave the phone the way it is after the jailbreak??
is there a step by step guide somewhere for the noob like me?
I have original 3.2.1 os on my Ipad and I want to update it to 4.2.1
fine. tipb rocks.also on ipod 2g.took your advice on a fresh install.can i throw the loader app now?
If I do this and 4.3 comes out in a week, how do I get on 4.3 without messing with my apps and data.
no need to restore, just run the new greenpois0n rc 6.1 right over your current 4.2 jailbreak. works like a charm.
Ive recently purchased an iphone 4 16GB running on iOS 4.2.1 with baseband 03.10.01. The phone was purchased through vodafone whom have informed me that the iphone is factory unlocked or does not have a carrier/sim lock.
I am ONLY looking to jailbreak the device untethered so i can access 3rd party packages, obviously not unlock it. (On Mac OSX)
Several forums have suggested using redsnow 0.9.7b6, others have said this purely depends on an already tethered jailbroken iOS with the correct SHSH blobs to work.
Some recommend preserving baseband with tiny umbrella if you are going to jailbreak, others have recommended using greenpoisOn rc5, some say rc6…etc
All i want to know is what to use for Jailbreak only - untethered ofcourse.
Will this affect my existing baseband at all?
Will there be any trace of it ever have been jailbroken if it is sent into Apple after a factory restore?
Many thanks to anyone who can answer all of these questions, or preferably has performed the same jailbreak as i am hoping to.
Can anyone help me with this? plz and thx
can someone tell me y?
pls n thx
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