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  • [How To] Jailbreak iOS 5 and iOS 5.0.1 With Ac1dsn0w

    Ac1dsn0w is a new jailbreak tool released by the Pwn Dev Team to jailbreak iOS 5 and iOS 5.0.1.

    Be warned that Ac1dsn0w is brand new and in Beta number 1. There will be bugs. You do this at your own risk. If you want a more reliable jailbreak, use Redsn0w or Sn0wbreeze.

    TETHERED JAILBREAK

    Ac1dsn0w is only available for Mac OS X right now. For legality issues, we will not be providing links. You can find it via Google.

    This jailbreak tool only works with:
    • iPhone 3Gs
    • iPhone 4
    • iPod Touch 4G
    • iPad 1

    To jailbreak an iOS 5 or iOS 5.0.1 iDevice using Ac1dsn0w, you will need the Ac1dsn0w application. Right now, it's only available for Mac OS X Lion and Snow Leopard. You can download it here. It is about a 35MB download and will take a bit to download depending on your internet connection type and speed.

    After you have downloaded it, unzip the .zip file and drag the application to your applications folder. Once you do that, open it up. The window will look like the first picture of this guide; up above. This is the main window of Ac1dsn0w. You have the option to jailbreak, boot tethered, enter pwned DFU mode, or exit recovery. Additionally, if you're an expert, you might want to show the console; it shows device information and the current state of the jailbreaking process. If you're a newbie, you might want to show the assistant; it shows how to get into DFU mode. The assistant and the console can be seen below:



    Once you put your device into DFU mode, you can use the assistant on Ac1dsn0w but clicking, "show assistant" if you don't know how, you can click the jailbreak button on Ac1dsn0w. Ac1dsn0w will then go through the process that it needs to:



    When it finishes the jailbreak process, you can click on the Tethered Boot option to boot tethered after jailbreaking. You will need to put your Device into DFU mode to do this just like any other tethered jailbreak; follow the assistant again before you click it:



    Once you are up and running, enjoy your tethered jailbreak on iOS 5 and iOS 5.0.1! You can install the Semi-tether to have the freedom to boot up your iDevice with stock iOS features. The Semi-tether will not grant you any jailbreak features until you boot tethered again.

    You can follow me on Twitter for the latest Pwn Dev Team updates.

    How did Ac1dsn0w work for you? Share in the comments below!

    Sources: My Mac, Pwn Dev Team
    This article was originally published in forum thread: [How To] Jailbreak iOS 5 and iOS 5.0.1 With Ac1dsn0w started by Anthony Bouchard View original post
    Comments 40 Comments
    1. iPod's Avatar
      iPod -
      Quote Originally Posted by Anthony Bouchard View Post
      What are you talking about? He's asking if he updates to iOS 5.0.1 if he can downgrade to iOS 5.0 to get the untethered jailbreak.

      This, you CANNOT do.

      And also, you cannot UPGRADE to iOS 5.0. Apple no longer signs it.
      What are you talking about? My whole point was that he doesn't have to upgrade to iOS 5.0.1. He can go online and download the ipsw file and restore to it. He is still on 4.2.1, and hasn't upgraded to 5.0.1.
    1. Anthony Bouchard's Avatar
      Anthony Bouchard -
      Quote Originally Posted by ipodtouchman77 View Post
      What are you talking about? My whole point was that he doesn't have to upgrade to iOS 5.0.1. He can go online and download the ipsw file and restore to it. He is still on 4.2.1, and hasn't upgraded to 5.0.1.
      My end consensus, he will not be able to get onto iOS 5.0 as he was asking to do. Whatever you're saying doesn't appear to be on the same page as what I am explaining.

      Quote Originally Posted by Tashawn View Post
      What make you so sure? It could just be another plain ole tethered jailbreaking tool.
      You need to read my other article about it. They will be implementing a remote jailbreak application into it.

      What makes me so sure? I spent the whole morning reading about the jailbreak tool on their Web Site so that I could write two articles about it.
    1. iSteveO's Avatar
      iSteveO -
      Quote Originally Posted by Anthony Bouchard View Post
      What are you talking about? He's asking if he updates to iOS 5.0.1 if he can downgrade to iOS 5.0 to get the untethered jailbreak.

      This, you CANNOT do.

      And also, you cannot UPGRADE to iOS 5.0. Apple no longer signs it.
      I know you can't do this clean, but couldn't you cook a custom sn0wbreeze IPSW file and put the device through iReb, then do the shift+restore method using the custom sn0wbreeze IPSW? This way, the device would be on iOS 5 and already jailbroken tethered, wouldn't it? I was under the impression that when restoring using a custom firmware Apple's verification methods were not employed. I hope I don't sound stupid or disrespectful, because I certainly know that you know much more about this than I do A.B.. Just my "2 cents" ...if its worth that much....
    1. Anthony Bouchard's Avatar
      Anthony Bouchard -
      Quote Originally Posted by iSteveO View Post
      I know you can't do this clean, but couldn't you cook a custom sn0wbreeze IPSW file and put the device through iReb, then do the shift+restore method using the custom sn0wbreeze IPSW? This way, the device would be on iOS 5 and already jailbroken tethered, wouldn't it? I was under the impression that when restoring using a custom firmware Apple's verification methods were not employed. I hope I don't sound stupid or disrespectful, because I certainly know that you know much more about this than I do A.B.. Just my "2 cents" ...if its worth that much....
      iOS 5 doesn't use SHSH blobs anymore, so custom firmware is useless.

      Ac1dsn0w breaks copyright laws and for that, all links have been broken and removed.
    1. i.Annie's Avatar
      i.Annie -
      +1. Custom firmwares aren't a replacement for lack of SHSHs. They're used to preserve basebands, and restore/upgrade+jb both at the same time.

      Regarding this article...I have to say, it's disappointing. Yet another tethered jb tool, just with a different name. Well hopefully with more devs and more tools, there will be a better likelihood of getting that untethered jb. Keep up the good work devs!
    1. Simon's Avatar
      Simon -
      Quote Originally Posted by ipodtouchman77 View Post
      What are you talking about? My whole point was that he doesn't have to upgrade to iOS 5.0.1. He can go online and download the ipsw file and restore to it. He is still on 4.2.1, and hasn't upgraded to 5.0.1.
      You cannot update/downgrade/restore to 5.0 anymore. Apple is not signing 5.0 anymore and SHSH in their current form do not work (yet) on 5.0+
    1. Beastly L92's Avatar
      Beastly L92 -
      I've heard some cool stories in my time. This one is probably the coolest, bro.

      Yawnzor. Just what we needed. Another tethered jailbreak for old phones and iPads.

      Edit: Yikes. Looks like its a sloppy "me too" that violates copyright laws as well!
    1. eman297's Avatar
      eman297 -
      it took a while but i see potential in this tool
    1. g4ess's Avatar
      g4ess -
      where is the 4s jb
    1. hrag525's Avatar
      hrag525 -
      im not the only one that has an iphone4s right?
    1. Beastly L92's Avatar
      Beastly L92 -
      What in the ******* **** does and mean?

      Seriously. Someone break it down.
    1. WaLLy3K's Avatar
      WaLLy3K -
      Quote Originally Posted by MuscleNerd View Post
      Unfortunately they achieve this by directly embedding Apple code in their program (15 times!). That's the kind of copyright infringement we stay away from. Hosting this app can lead to DMCA takedowns, etc.

      (Anyhow, redsn0w doesn't need the IPSW for each tethered boot either..it fetches the images from Apple's servers once and then caches them.)
      That's interesting, because I'm needing to use the iOS 5.0.1 B1 developer IPSW to boot my phone despite the fact I've got the public version of 5.0.1 installed. I didn't think redsn0w was updated past 9.9.8b8
    1. honeydew's Avatar
      honeydew -
      I noticed your wallpaper looks neat, so I'm wondering where did you get it from?
      thanks lol
    1. confucious's Avatar
      confucious -
      Quote Originally Posted by WaLLy3K View Post
      That's interesting, because I'm needing to use the iOS 5.0.1 B1 developer IPSW to boot my phone despite the fact I've got the public version of 5.0.1 installed. I didn't think redsn0w was updated past 9.9.8b8
      If you actually read the instructions you would know that you should be pointing 5.01 at the 5.0 ipsw as the advice was not to upgrade to 5.01 - for everyone that followed the advice RS does not need an ipsw.
    1. mbouchamekh's Avatar
      mbouchamekh -
      yeah as long as no untethered jb is available, all the said is nothing, we wanna untethered jb, not bla bla, w'r bored of 2 Much talk ........
    1. serafinthe3rd's Avatar
      serafinthe3rd -
      Quote Originally Posted by sziklassy View Post
      Well, I can say that, just based on the screens, the GUI looks much nicer than any of its predecessors.
      Well I jail broke my phone and it crashed! I restored it trough iTunes and know my 3G Internet doesn't work! Can anyone help!?
    1. Moreno53's Avatar
      Moreno53 -
      Quote Originally Posted by ipodtouchman77 View Post
      Calm down and go make your own jailbreak tool that is untethered for iOS 5.0.1 AND 5.0.2 with some rockin name, and PM me when you're done. The reason for untethered jailbreak for 5.0 is because 5.0 may carry exploits and bugs that iOS 5.01 may have plugged. iOS 5.0.1 was also a minor update, so there is no use in spending much time on it, when we know more updates are coming in the future.


      that's funny, I never knew that one can DOWNGRADE from an old firmware to a new one. he's still on 4.2.1, therefore it WILL work for him to UPGRADE to 5.0.
      Listen Captain Jailbreak. This is a form about the iPhone, where people criticize and comment on the iPhone. I don't see you telling people to go build their own iPhone, because maybe they aren't happy with a feature or two.

      It's a valid point that there doesn't need to be 13 different variations of "ra1n" or "sn0ws". There is just no reason for it. Secondly 5.0.1 corrects the battery issues that's been draining batteries like they were a box of koolaid. So no it's not such a "minor" update.
    1. WaLLy3K's Avatar
      WaLLy3K -
      Quote Originally Posted by confucious View Post
      If you actually read the instructions you would know that you should be pointing 5.01 at the 5.0 ipsw as the advice was not to upgrade to 5.01 - for everyone that followed the advice RS does not need an ipsw.
      I read the advice and upgraded because I care more about battery life than an untethered jailbreak - when your battery life only drains 1% over three hours when the device is in standby mode, I'd rather take that over the minor inconvenience of needing a computer to boot my phone every three months. Also, the fact still remains that you need to point it at an IPSW to boot this software version when using Redsn0w.

      Don't be condescending and assume that people don't know what they're doing.
    1. V1cmlb's Avatar
      V1cmlb -
      Quote Originally Posted by Beastly L92 View Post
      What in the ******* **** does and mean?

      Seriously. Someone break it down.
      +1 yes please
    1. Clay Obi Levering's Avatar
      Clay Obi Levering -
      Quote Originally Posted by WaLLy3K View Post
      I read the advice and upgraded because I care more about battery life than an untethered jailbreak - when your battery life only drains 1% over three hours when the device is in standby mode, I'd rather take that over the minor inconvenience of needing a computer to boot my phone every three months. Also, the fact still remains that you need to point it at an IPSW to boot this software version when using Redsn0w.

      Don't be condescending and assume that people don't know what they're doing.
      Well, without sounding condescending - if you are using a beta from the dev builds:

      1) The only way to remove yourself from the beta firmware requirements is to do a restore rather than update - this is most likely why you cannot use stock IPSW's from Apple. Redsn0w cannot download dev beta builds to cache and requires you to provide them, and you can't upgrade until you've completely restored to a stock firmware.

      2) 5.01 *is* jailbreakable from Redsn0w, natively. Technically, your Beta is likely expired already but part of redsn0w and sn0wbreeze remove expiration

      finally,

      3) Yes, Redsn0w (and all limera1n based jailbreaks) require the IPSW. However, where ac1d and redsn0w differentiate is that ac1d pre-packages these pieces of necessary (and legally protected) pieces of Apple's code (bootrom / etc). redsn0w fetches the IPSW's from Apple upon device discovery. This means that until you hardware an iOS device (and thus providing at least some proof of ownership - a key factor in part of the legality of jailbreaking), you won't have that code - and once you DO have that code, you've obtained it from the appropriately legal source.

      I guess another "finally" might be:

      Don't be so condescending.