Peter Binder iOS 4.2.1 was officially released this Monday and within a few hours the iPhone Dev Team released a jailbreak for this update that works on almost all Apple iDevices. Specifically, it is redsn0w 0.9.6b4.
Unfortunately, for new devices, it is a so-called tethered jailbreak, that is, when you turn off and on the device, you have to boot again using the Redsn0w application on your computer, which is very annoying for users.
However, this problem is only for newer devices – iPhone 3GS (new iBoot), iPhone 4, iPod Touch 2G, iPod Touch 3G, iPod Touch 4G and iPad. So Untethered only applies to: iPhone 3G, older iPhone 3GS and some iPod Touch 2G.
But the Dev Team promised that they are working intensively on the untethered version for all iDevices, so we could easily expect it any day. For the impatient or owners of older devices, we bring instructions. This redsn0w jailbreak can be done on both Windows and Mac.
Jailbreak step by step using redsn0w
We will need:
- a computer with a Mac or Windows operating system,
- connected iDevice to the computer,
- iTunes
- redsn0w application.
1. Download the application
Create a new folder on your desktop into which we will download the redsn0w application. You have download links on the Dev-Team website, for both Mac and Windows.
2. Download the .ipsw file
Next, you need to download the iOS 4.2.1 .ipsw file for your device, if you don't have it, you can find it here . Save this .ipsw file in the same folder as you did in step 1.
3. Unpacking
Unzip the redsn0w.zip file into the same folder created above.
4. iTunes
Open iTunes and connect your device. After performing the backup, including the completion of the synchronization, click on the device you have connected in the left menu. Then hold down the option key on Mac (shift on Windows) and click the button "Restore". A window will pop up where you can select the .ipsw file you saved.
5. Redsn0w app
After the update is finished in iTunes, run the redsn0w app, click the button “Browse” and load the already mentioned downloaded .ipsw file. Then double tap on "Next".
6. Preparation
Now the app will prepare data for jailbreak. In the next window, you will be able to choose what you want to do with the iPhone. I recommend ticking only "Install Cydia" (if you have an iPhone 3G or a device without a battery status indicator in percentages, mark also "Enable battery percentage"). Then put again "Next".
7. DFU mode
Make sure your connected device is turned off. If not, connect your device to the computer and then turn it off. Click on "Next". Now you will perform DFU mode. It's nothing to worry about, plus redsn0w will guide you how to do it.
8.Jailbreak
After performing the DFU mode correctly, the redsn0w application will automatically recognize the device in this mode and start performing the jailbreak.
9. Done
The process is complete and all you have to do is click "Finish".
If you have a device that only tethered jailbreaks and you need to reboot (after turning it off and on), connect it to your computer. Run the redsn0w application and select the option "Just boot tethered right now" (see picture).
If you have any problems while jailbreaking your apple device, please let us know in the comments. For owners of newer devices, I can only lament the now available tethered jailbreak.
Almost all of us know what an excellent job the hackers from the iPhone Dev Team or the Chronic Dev Team do. It doesn't matter if we take it from the point of view of jailbreak fans or from the point of view of its opponents (hackers discover security flaws that Apple will close with the next update), and therefore I am almost sure that the next version of the jailbreak will be released very soon and will be untethered for all iOS 4.2.1 devices .XNUMX.
Source: iclarified.com
I would just like to clarify that if you updated your iPhone on your Mac, you already have the firmware downloaded to the disk. you can find it in your home folder in Library/iTunes/iPhone Software Updates
Jack
And be careful if you need an unlock, it already has a BB requirement...
And how do I know if I have old or new iBoot?
Hello, after uploading jb, cydia is white and won't start. Do you have any experience with this? Thanks
Try again :) the same thing happened to me and it's fine ;)
DJManas: How do I know I need an unlock?
Unlock is needed when owning a device that is blocked for the operator. E.g. when buying an iPhone from abroad, where the phones are blocked to only one operator (eg A&T in the USA).
Horis-Restart iPhone
PS: you have an error there
If you have a device that will only jailbreak untethered (here it should be tethered, right?) and you will have to boot it again (after turning it off and on), connect it to your computer. Run the redsn0w app and select “Just boot tethered right now”
Thanks, of course it should have been tethered. I am sorry.
Does it work for someone with an Iphone 4 16G? Thanks
So how is it going with the unlock???? I have an iPhone 4 and since I can't sim unlock it because of the new Baseband, I'm asking???
After downloading white cydia, what should I do?
if you have a white cid, you have a new bootrom, so you have to boot, see the last part of the instructions...
I wanted to ask what are the benefits of using this???? Thanks
Will it also unblock bb 05.15.04?????
I have a half year old 3gs. I do everything according to the instructions, and towards the end (step 8) two checkers appear immediately and nothing happens. So I don't know if I should wait half a day or if there is something wrong :D The iPad does the same thing...
Hal, you have to let it go with the compatibility of WIndows XP, it did the same for me on WIN 7, then it's a question of five minutes ;)
Thanks a lot, I'll do it
It got cut in the tadpole for a change, so I cough it up :D
It happens to me too and I don't want to get rid of it, does anyone know why it stops during the jailbreak installation and then after some time my iPhone restarts itself, but it still seems to work in win and it's half way thanks for any advice.
I couldn't jailbreak 4.2.1 on XP and it worked on WIN 7... so I probably can't give much advice... I tried it about 3 times on XP and then my friend and I switched to 7 and the first time...
I can't figure out how to make XP compatible, I have W7 and it doesn't work :-( Thanks for the advice!
right click on the computer icon and then select compatibility and let it run as XP
Good day, after jailbreaking and starting and then entering the pin, the operator is not found and the phone cannot make calls or write sms. After a classic restore, everything is working again. JB did it twice with .ipsw from different sources and the same result. I have an iPhone 2G. Does anyone have experience?
Hello,
your iPhone is probably blocked on the operator, download ultrasn0w in cydia
Hi, I put JB on 3G and it doesn't install Vlc or any other similar player, the installation goes fine but nothing appears on the "desktop" even though I tried both through instalous from cydia and the app store .. And nothing ???
Hello,
I just noticed that I also have no signal with JBkovani 3G :) The SIM card unlocks in the classic way, one signal line lights up and that's it. In the settings, there is not even an item carrier, operator or anything, just like when airplane mode is activated..
Btw. I'm glad to see that after the restoration it will be fine again :) Can't we do something about it? first JB and just this :P
Hello,
I have the same problem as woody. I have an iPhone 3G 8Gb from Vodafone and a Vodafone SIM card. can it be solved somehow, or do I have to downgrade to iOS 3x?
one more note, is it necessary to install a new version of iOS using iTunes before the actual jailbreak? It is not enough to grant the following:
– download redsn0w
– download ipws iOS
– run redsn0w, select ipws iOS and dump it there already modified?
it's quite easy, I read it somewhere.
Then only the operating system is hacked, but not the gsm module or whatever. it's just that the iphone is a computer with functions for calls :) they are not accessible then, according to everything, we didn't do anything wrong... can someone confirm, please?
I already solved it, it was probably caused by the fact that I did not restart the phone after installing iOS 4.2.1 in iTunes (it was in recovery mode). After that, everything went correctly, but it was impossible to make phone calls. So I tried to use iTunes to restore the phone and it woke up, it worked, but it didn't have a jailbreak. After starting redsnow and jailbreaking according to the instructions, it works fine for me.
.F
Hello, nothing is wrong, it's like that…. JB is OK, but the new firmware on the GSM modem is loaded during it, I think it is version 05.15.04 and it is not unlocked yet... one root in the service claims that it will work, but as soon as it is turned off, it is blocked again... I am working on it poresil, and if not we'll have to wait until DT releases it :-)
I have already done everything several times but the cydia icon just flashes and won't start and the same safari. Can anyone help?
Díky
aha.. so when I have it like this:
instructions given here, full restore with the help of the downloaded ipsw file (without DFU, is that correct?) + restore backup, so now redsnow again? Or? :D
+ I would also like to ask how to record games downloaded from the Internet, in ipa format.. installation directly via itunes, but surprisingly it doesn't work.. upload directly to the phone via the iphone browser? or only on JB phone? help, please :)
Well, when I launched iTunes, it downloaded iOS 4.2.1 and installed it on my iPhone. Then I restored the data from the backup, and then I started redsnow and used the previously downloaded ipsw file. And it was jailbroken with a working phone and all the data from the backup.
and which ipa application, I used iSpirit, but it somehow doesn't work for me in iOS 4.2.1, so I install via iTunes, which is the only thing that works for me. You also have to download the AppSync package via Cydia. You can find it when you add the source "http://cydia.hackulo.us" to Cydia. pay attention to the version of the application, it must be the same as iOS, otherwise it will not work.
thanks a lot, I'll try tomorrow, in a little while at night and unfortunately it will take longer than half a day :)
I wonder if anyone is still trying to break???!!! Also, 99% of people here do it just so they can steal apps, right???!!! I have already bought everything and jailbreak is a waste of time for me and soiling my phone with fully functioning crap from cydia. If I wanted a phone where I could try non-functional crap, I'd buy something with Android ;-))
But I love the 100% functionality from Apple!
do you love the 100% functionality provided by big brother AppStore? And do you think that no one else can program functional and high-quality applications other than those approved in the AppStore? Of course, if you mindlessly pour everything you can from cydia into your iPhone, it won't be of much use...but on the contrary, you will find things there that are not on the appstore and are functional, you need my favorite mc, or other utilities for the command line, which works great on iPhone. From the user's point of view, I agree that jailbreak is not necessary. From the point of view of the "advance" user who wants something more for the money that the iPhone costs, this is a necessary thing.
It's true, but it's always been difficult for me to distinguish high-quality and functional applications from Cydia from various fakes... I also hate the absolute control on the appstore, but what can I do... Again, when I bought something that wasn't quite right, I always successfully complained about it and they refunded me money, even in cases where I was not completely right. But everyone can do what they want with their iPh ;-))
But there is also an overwhelming percentage that mainly concerns the unlock... even if it doesn't look like that in this discussion..
Good day, I did everything according to the instructions, but as soon as I turn on cydia on the ipod, it starts up and immediately turns off, what should I do?
iOS 4.2.1 works. even on iphone 2g????
thanks for the reply..
Yes, it works. But the speed is not like iOS firmware 3.x.
I have op 3.1.3 and I can't get internet sharing there... can you give me some advice??
dik
It's not my first time doing JB, but somehow this one doesn't work 100%. When I do the last step in redsnow - the IP is supposed to reboot, but it doesn't, just a black screen and itunes shuts down. Nothing is happening. Another PC or USB port doesn't help either. Neither reinstalled iTunes, nor downloaded redsnow again, nor iOS. Nothing helps. Do you have any similar experiences? Thanks for the advice.
Hello, please give me some advice. I have an iPod touch 8GB, probably the 2nd or third generation, it was that Apple messed it up somehow and put ios 2 in the 3 and claimed it was the third generation. But that was solved somewhere else. In short, I updated it to 4.2.1 .XNUMX and now I can't jailbreak. every time when I count down the three steps, it's fine, and then the jailbreak jumps in, but there is some limera written on the scale and it stops around the middle and then nothing. even before that, when I browse the software, it tells me something about the MC model or something. Please, how can I do it or get to another iOS? Thank you very much.
Stupid question, I have iPhone 4 bought second-hand, how do I know for which operator it was made?
Can it be recognized based on imei?
Thanks for the reply
I have such a problem, after JB and after restarting, my iPod won't start, it's just the black screen with the apple there forever. Don't know what to do with it? Thanks.
en I have the same problem, how did you solve it?
the same problem after JB, only apple and when I reboot, it's pineapple and nothing happens and I can't back up either, don't you know what I'm doing please? thank you
thanks, I have an Ifone 4 firm 4.2.1 and according to this procedure it is completely comfortable.)) thanks a lot...
i have a problem after completing the dfu mod on iphone 4 4.2.1 redsnow gives me an error not to send..anyone any advice what to do with it?
so, for the umpteenth time, it crashed while "waiting for reboot" and I don't know what to do next. Can anyone help?
...can someone help me, I have a problem with downloading the necessary iOS 4.2.1 ipsw file, it always downloads as rar and when I unzip it, there is no ipsw ending, so I can't open it in redsn0w. I have windows vista thanks
I have to join too. redsn0w will print waiting for reboot and that's it.
Something will probably happen to the USB, then the iPhone device will appear, but nothing...
At one point redsn0w showed uloading ramdisk or something like that, but it happened on the spot….
I have already done factory update and restore about 6 times today. Otherwise I can't get it out of DFU.
I have 3G locknute on TMO...
So the last update - IT WORKS! Maybe you can skip step 1 or 2, definitely not both :)
1. I updated to 4.2.1 via iTunes
2. Next, I put the same ios on the phone via shift-restore
3. I had the phone activated, I tried to make a call from it
4. I did NOT resync in itunes, I just ended them (hopefully I will get to the contacts sometime)
5. I turned off the phone (it's still on USB!)
6. I started redsn0w and followed the instructions
7. everything went as it should, the phone restarted, the pineapple appeared and was doing something...
8. then it restarted again and voila I have a JB phone :)
Hello,
i'm not an enthusiast like you here but just an inexperienced and ignorant user of a two year old iPhone 3G 16G. I can't find a way to transfer about five hundred contacts to my PC. It's understandable that I don't want to rewrite it manually... Can you give me some advice?
Thanks for any reply.
Hello,
you have several options, the easiest is to have the iPhone sync with iTunes, your contacts will also be transferred to this backup. Another option is, for example, Google contacts, where you can transfer your contacts and then export them back to your paddle.
Done, but the problem was I wanted to go to cydia hackulo.us according to the old instructions, I did it, it was installed and then the iPhone restarted, the apple appeared and nothing else I had to do to get it to work, does anyone know about the instructions for that cydia? I don't even know how to put applications there normally from a cracked computer, thanks a lot =(((
Now a friend helped me with the installation on Iphone4 (4.2.1.) for about an hour. Although I did everything he told me and we followed the instructions, after booting up the iPhone the Cydia icon just showed up in white and when I clicked on it it did an animation as if the app was opening but within a millisecond it closed again… And I tried also compatibility with XP etc. (I have win7), but to no avail. I guess someone wouldn't know what to do with that, huh? :o|
2. Download the .ipsw file
it only appears as a folder inside with data and files that I can't open in anything :-( Does anyone know what to do with it?
try to download it in another internet. browsers, I downloaded it in Explorer and I was in the same situation, I only had rar, then I downloaded it in firefox and I had ipu :-) those who have white cydia, just do everything again with the difference that in step 6 you do not check cydia but just boot….
-try to download it in another internet. browsers, I downloaded it in Explorer and I was in a similar situation, I only had rar, then I downloaded it in firefox and I had ipu :-) those who have white cydia, just do everything again with the difference that in step 6 you do not check cydia but just boot….
yes, and even if it doesn't work, it's good to run redsnow with compatibility with windows xp (right mouse button on redsnow-properties-compatibility....)
Please advise me
when tethered jailbreak my iphone shows a bitten pineapple on the screen and it loads. Nothing more. I don't turn the phone off or on.
Try performing DFU mode. That should go. Or hold the home+sleep buttons, that should turn off the iPhone. Then you can try turning it on again. Or turn it off and try the DFU one.
Thanks, that really worked. But now I can't turn on safari or cydie. It appears for a mini moment and then turns off. I do not know what do with it. I tried tethered jailbreak about 3 times and still the same.
I dont know that. What I would recommend is to wait for the untethered jailbreak, which should be released before Christmas.
Hello, I have an ipod 3G (4.2.1.JB) and I entered everything correctly, everything works for me, but when I want to turn it off and on, I have to do JB again.. Does anyone know what to do with it? ;)
Hello, I have a question. I have an iPhone 3G and I'm not sure if the jailbreak was successful. Cydie works for me, but I downloaded some games via torrent, when I put them in itunes and want to install them, it reports an error. Don't know what to do with it?
Unfortunately, my dear, no one from our editorial office can advise you on this, because games are not stolen, but bought, so write it down and try to buy a nice game instead of a cup of coffee. The programmer has a hard time with it, so I think he deserves 20 here, we don't steal rolls in the bakery either, do we?
JB is fine :-) just from the appulos.us repo you have to download an app called appsync or something like that, then you can sync it to the Ip 3G via itunes :-) if so, I'll be happy to advise you on skype :-)
and after downloading AppSync it should go from the net? I do have an iPod 2G, but it's not such a big deal, is it? :)
Hi guys, I jailbroken my iPod 4G and it doesn't work with Cydia at all. is it possible to somehow make it go and safari doesn't work either. does it work for anyone or do they also have a problem with IOS 4.2.1
I have such a problem, to tell the truth, I haven't read all the posts, I'm hoping that someone can give me some advice.
I have an iphone 3G. And I have the ipsw file directly downloaded to my computer, before I did the restore, but the redsn0w program writes me this update as if it doesn't recognize it or something, and the continuation will not take place. So I tried to download a new ipsw file from the above-mentioned pages, but I can't get it to my phone via iTunes, because it says it's not compatible with my device.
Can someone please advise me what to do with it? :(
thanks a lot
great instructions, I have an iPhone 3g ios 4.2.1, it works great
I have a problem, the jailbreak went fine, but after starting cydia, my phone restarted and it doesn't want to boot, I only see an apple and nothing else, even a reset didn't help. Does anyone know what to do with it?? Please help
When should the New Jailbreak be released please?=)
Hi, I have this problem-
After performing the DFU mode correctly, the redsn0w application will automatically recognize the device in this mode and start performing the jailbreak.
redsn0w always stops working for me (turns off) and a message pops up about looking for a problem on the net
Don't you know what I'm doing? Thanks
Hello. I have a question. It's like I have to be connected to the PC every time I unlock the screen? Please explain it to me a little bit. thanks a lot.
What kind of jailbreak is this forum for?
Hello everyone, I have an Ipod Touch 4.Gen and version 4.1 and I have this problem. At the beginning, when I have to put restore + shift, I select a file and it tells me that it is not compatible and that nothing will happen... What should I do? :)
hello, it also wrote to me, obviously inattentiveness, check if you really have the ipsw file for the touch version 4.1... I don't know why but I thought I downloaded it well and then I look and it was for the iPhone 4
on the above page from that article, it's at the very bottom, the last one :)
Hello everyone, I have a small problem. Everything works for me, but I can't get a signal. My sim card is loaded then only one character and nothing :( Can someone please advise me what to do with it or why it is doing this? Thank you very much, if so write to the email thank you very much :)
It is also possible to download this for the iPod 4G. Please advise how to get movies, games, if possible, exact instructions or how to create a free account.
Thank you Jana
I'm a complete beginner and I don't know how to do it.
Thank you
Hello guys, I have an Ipod Touch 3G 8gb and I downloaded the ipsw file.. for the IPOD TOUCH 3G 4.2.1 I have the iOS 4.2.1.. but when I press SHIFT+Restore and select the file it gives me an error and it says : "The ipod "myname" could not be restored because the firmware file is not compatible." which I don't understand if I have 4.2.1, please advise thanks :) if so, also mail :)
ok some bug, it works now :)
but anyway.. when the mod or something was done.. so with Exploiting with limeran it lags and does nothing :((
Hello,
I wanted to ask..
I have iTouch 2nd Generation and MC model..
Is he going to do JB..?
Thanks.. :)
Jailbreak successfully done on both devices with cydia and install0us installed. I have a problem with both devices, when I turn them off and on, only the apple starts up and after a while the loading wheel appears and the system doesn't start anything else. What is wrong?
just read the article :) If you have a device on which only a tethered jailbreak will be performed and you will have to boot it again (after turning it off and on), connect it to the computer. Run the redsn0w application and select the “Just boot tethered right now” option (see image).
Hey, a question for JB..
i backed up, then 4.2.1, then JB. JB won't work somehow, flashing Cydia and Safari, as someone already wrote. Then I had to leave, and I recorded a video... the next day, because the JB was probably not correct, I booted through redsnow, and it didn't start at all. Now it's in a state where I can get to DFU where I can perform a restore. But I would like to get the video back here..:) so, before I do the restore and JB again, I have a question if there are any means of taking out a photo or video in DFU mode.. I don't believe it's possible, it's just a question of load. .and I would like to know you..:)
I have a question.
I have JB without any problems on my iPhone 3GS – untethered. I have purchased and activated Orange world from the operator Orange SK - internet, but my phone says: "It was not possible to activate the mobile data network - you do not have prepaid mobile data services".
Can anyone advise what to do with it or is there just some hack for it?
Well thank you.
Thanks for the article, I've been looking for something like this for a long time.
Sale!
I have an iPod touch 3G, Win vista and I followed the instructions exactly (I hope) and after I did the DFU mode and the jailbreak it started to install and after a few lines (during the installation) a window pops up from windows - redsnOw this and that one stopped responding and it is necessary to terminate it (there is only one button at the bottom and that is to terminate the program). I ran it with XP compatibility so I don't know what to do. Please, give me an advice :)
Could it not be that I only put restore in iTunes first and not shift-restore?
I have the same problem as Adaam. I don't know how to run it in Win XP compatible mod, but I get exactly the same - it starts booting, the jailbreak download pops up on the phone and redsn0w exits and that's it
Caute.. I have a problem with installous not being installed after jailbreak. Please email me garfields.itouch@gmail.com
Hello,
i would like to ask if it is possible to jailbreak the iphone somehow.
Thank you
Hello,
I want to ask how the iPhone after JB works with the AppStore? Is it possible to work normally via iTunes with the AppStore after JB, or do I have to use only and only Cidi?
Thanks a lot, M
Hello,
I managed to Jailbreak successfully, but when I started Cydia and downloaded an app, it prompted me to restart, which I confirmed, and now the iPhone doesn't want to start and I have an "apple". Don't know what to do with it?!
Thanks for the advice, M
Hello,
on an iPhone 4 4.2.1, with a jailbreak I get a fully functional device except for Wi-Fi, bluetooth and IMEI.
The IMEI is empty even during the official restore, but there is no error message. Does anyone have any idea of a solution please?
i did a jalibreak successfully but then i connected the ipod to the pc and started itunes and it showed restoring and i deb.l pulled out the cable and now there is only an apple and nothing happens and when i connect it to the pc it doesn't even load it :((( please advise me
di pice, now it happened to me too fucking, it's in piciiiiiii a brand new iphone and now I don't know how to get it working :(
You can try DFU mode, it always works and is the solution to most problems.
Well, I tried it and now the iPhone 4 won't turn on. He is completely deaf. Little ones.
When will we get the jailbreak on the table?=) please?=)
Please, when I download the file that is supposed to be .ipsw, it downloads it as a ZIP file, what should I do to make it download .ipsw??
Thank you in advance
Please, someone help me... I always download the .ipsw file but it is downloaded packaged and after unpacking there is no .ipsw file, but only more others and then Itunes can't open it, how can I turn it into a .ipsw file pls? I have an iPod touch 4g.
Try rewriting the extension from .zip to .ipsw. It should work ;).
by the way, what happens if I turn off the ipod that only currently has JB??
otherwise those who already have JB and have reset their iVec then you have to put in redsnowe just boot now then you will be fine
can someone pls tell me how long it should take?? .. because I'll catch up with it for a while, it still does nothing ... thank you
Hello,
I have JB 4.2.1 but for optimal speed I did not choose the same background image or multitasking. The only solution is to do JB again, am I right?
Díky
It won't connect to the operator, what about it?
Greetings gentlemen,
I performed JB according to the instructions and I have such a "minor problem" since then the device does not work after switching it on (or the apple icon lights up and that's the end of it)., iTunes does not recognize it and even after connecting it to a PC, the PC does not recognize it with standard sound. How to get out of this trap?
Hello, I have a problem with the iPod Touch 2G. I run any Redsn0w and enter iPod2,1_4.2.1_8C148_Restore, so it says: Is this an "MC model" of the iPod touch 2G? If you are not sure, you can find your model type in your Settings-General-About screen.CAUTION:If you have an MC model and you dont correctly identify it here,you will likely need to do a full official restore to fix the mistake,losing any unsynced data.Note that MC models cannot yet have custom logos This version of redsn0w doesn't support the iPod touch 2GMC model yet. Check back again soon! And if I put iPod3,1_4.2.1_8C148_Restore, it loads halfway and after a few hours I gave up. Pls help and thanks in advance
Hello, I have an Iphone 3g, I will do jaibreak 4.2.1 according to the instructions, but the signal starts up :( and it still tells me that recovery is necessary and my iPhone restarts :( don't you know what to do with it??
I got my hands on an iPhone with iOS 4.2.1, I wanted to jailbreak, I followed the instructions... since everything went smoothly, when I opened and confirmed Cydia, I entered USer... but it said that 0.9.6b4 is not up to date... I know it's been a while, but there isn't anything more up-to-date that would help me... ps: I did JB through Windows...