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  • Jailbreaking & Unlocking iOS 4 : What You Should Know
    Note: This Post will be udpated as news becomes available. Please share your experiences in this thread. It is highly suggested you do not update to iOS 4 right away. Please be patient.



    Today, as expected, Apple released iOS 4 to the public. But before you get too excited, there are some things you should know before updating to iOS 4. If you want to play Jailbreak with your iDevice, make sure you read through this.

    iOS 4 is compatible with the 3G, 3GS, the newest iPod Touch and iPhone 4. Those of you that have played with the GM release, the build number on this public release is exactly the same; 8A293. So as for changes since the GM there are none in this release.

    Update:
    Quote Originally Posted by bennyg View Post
    there are actually differences in the GM and public release. Notice no game centre in the public release? Also if you go to http://oo.apple.com to opt out of the iAd data collection stuff on the GM release it states your not on iOS4!

    Jailbreaking

    iPhone3GS & iPod3G owners (especially if you used Spirit for your first JB) should stay away from iOS4 for now

    Wizdaz has kept the community in the know, informing us that PwnageTool is currently being updated as we speak. PwnageTool 4.0 will support the iPhone 3G (with Pwnage exploit), iPhone 3GS and iPod Touch 2G (both with 24kPwn exploit). Keep in mind this means no support for the newer bootom. Remember the tethered days? If that was you, then you will need to wait until Spirit is updated or a new tool is updated for such.

    There is of course the Redsn0w option if you have a 3G, but stay away from any custom packages. The Dev-Team has written it well, and because of their credibility, here is exactly what they say

    We are working hard on a release to our tools that will jailbreak your device (or give you iOS 4 via the jailbreak train) and provide you with a carrier unlock.

    Until these tools are released you should hold off on updating your device until we have fully tested our tools with all the relevant devices.

    If you rely on hacktivation or a carrier unlock (ultrasn0w) then you should not upgrade until we have fully tested and released our tools.

    Don’t be tempted with unofficial PwnageTool/redsn0w bundles or releases, just check here or our team twitter for real time release information.

    Remember, we risk our devices so you don’t have to (but this time anyone who has made a mistake upgrading their baseband firmware at 3.1.3 or 4.0 should be OK real soon Now!
    iPhone Dev-Team
    WizDaz


    Unlocking iOS 4

    The iPhone Dev Team has released ultrasn0w 0.93 for unlocking your new iOS 4. Simply add the Cydia repo: repo666.ultrasn0w.com. This version of ultrasn0w will unlock basebands 04.26.08 thru 05.13.04. If your unsure, that means that ultrasn0w unlocks ALL basebands since iPhone OS 3.1. Even more specifically, 04.26.08, 05.11.07, 05.15.01, and 05.13.04. Remember to disable 3G on T-Mobile USA.

    So on the unlocking front, you're pretty much golden. However it's still recommend to wait just a little bit longer before making the plunge for iOS 4.

    iPhone Dev-Team
    MuscleNerd
    This article was originally published in forum thread: Jailbreaking & Unlocking iOS 4 : What You Should Know started by nickhesson View original post
    Comments 470 Comments
    1. miladjuckel's Avatar
      miladjuckel -
      can anybody answer this for me please: i just upgraded to 4.0 but i can't sync with itunes i keep getting the following message: Itunes cannot read the contents of the iphone. Go to the summary tab in iphone preferences and click restore to restore this iphone to factory settings!
      but everything else works fine as far as making calls and so forth!
      any ideas????
    1. djdanwilson's Avatar
      djdanwilson -
      I currently have OS3 on my iPhone 3GS and used Spirit to Jailbreak and have Cydia installed.

      But I want iOS4.

      I don't want my phone to be jailbroken any more - don't see what the fuss is about to be honest.

      Anyway, can I remove the jailbreak and install iOS4?
      What will happen if I do?
    1. miladjuckel's Avatar
      miladjuckel -
      as far as i understand u MUST jailbreak to obtain the iOS4 file so therefore there's no way around it for as of now, and then you'll have to use ultrasnow through cydia to unlock the phone
    1. NBGHHS's Avatar
      NBGHHS -
      Ipod 3G? Any news on something that can be used for ios4 on ipod 3g?
    1. miladjuckel's Avatar
      miladjuckel -
      not sure about ipods i only worked my iphone, ur best will be to check ipod forums
    1. mzolex's Avatar
      mzolex -
      just unlocked my 3gs on 3.1.3 thanks to the dev team.
    1. igarys's Avatar
      igarys -
      I can't even downgrade to 3.1.3 anymore. Itunes won't let me...looks like I'm stuck with 4.0
    1. Maarten16's Avatar
      Maarten16 -
      and it's jailbroken
    1. Simtech's Avatar
      Simtech -
      Quote Originally Posted by miladjuckel View Post
      as far as i understand u MUST jailbreak to obtain the iOS4 file so therefore there's no way around it for as of now, and then you'll have to use ultrasnow through cydia to unlock the phone
      WoW... where did you get that information???
      iOS4 is a public release for all iPhone / iPod models except 1st gen. Now if you want to unlock.. that's another story.
    1. chriiis1's Avatar
      chriiis1 -
      Can someone please tell me what the problem is with cydia right now?

      I have a iphone 3gs on 3.1.3 with 5.12.01 jb with spirit and I've tried to unlock it with ultrasn0w but it doesn't work. I recive no signal.
      I've tried to restore the firmware lots of times and jb but it says that something is wrong with the apt.modmyi.com and I think thats the cause of why my it don't want to unlock.

      apt.modmyi.com doesnt exist in sources, and I cant add it. Cydia can't download packages, it's just says "downloading" forever..

      I tried to restore 3.1.3 and re-jb at this exact point that i'm writing this and now cydia has not a single source or package.
      Is cydias server down or is my iphone screwed?

      What should I do? :/
    1. michaelsvx's Avatar
      michaelsvx -
      I get an error launching redsn0w, application not supported on this architecture. Is there something else I can use? I'm on a powerbook 10.5 btw.
    1. iNT3Rv3NTiONZz's Avatar
      iNT3Rv3NTiONZz -
      Ok I CBS to read everypage on this thread so is there any fix to the White icons problem? And my cydia just sex downloading packages for ever when I refresh and never actually completes and loads changes WTF?!?
    1. xxzone's Avatar
      xxzone -
      Quote Originally Posted by chriiis1 View Post
      Can someone please tell me what the problem is with cydia right now?

      I have a iphone 3gs on 3.1.3 with 5.12.01 jb with spirit and I've tried to unlock it with ultrasn0w but it doesn't work. I recive no signal.
      I've tried to restore the firmware lots of times and jb but it says that something is wrong with the apt.modmyi.com and I think thats the cause of why my it don't want to unlock.

      apt.modmyi.com doesnt exist in sources, and I cant add it. Cydia can't download packages, it's just says "downloading" forever..

      I tried to restore 3.1.3 and re-jb at this exact point that i'm writing this and now cydia has not a single source or package.
      Is cydias server down or is my iphone screwed?

      What should I do? :/
      Same issue. I manually added Index of /cydia-3.7/ since my sources were blank, and it started adding the repos, but got stuck downloading again. I could go to updates/refresh before, and it would get stuck doing the same thing.
    1. DmVinny's Avatar
      DmVinny -
      Ok hopefully I understand this correctly, and forgive me if I missed one of the posts, but there are quite a bit and I tried to read em all, but sometimes people post things that make it more confusing then it should be...

      For Jailbreaking.. (Not unlocking) on 3.1.2 Jailbroke 3G

      1. You should remove mobile substrate if it the new version? 0.9.3206-1?
      2. Upgrade the iPhone to iOS4 from apple first, then download the ispw file to your hard drive. (how do u download it?)
      3. Load up redsnow and choose the ispw file you saved to your hard drive.
      4. Load up cydia, and run all updates individually.
    1. tatabox's Avatar
      tatabox -
      I have a iphone with the new OS (4.0), and i understand that there is no JB for it. So am I screwed with unlocking it?

      How can I downgrade it back to 3.13?
    1. DmVinny's Avatar
      DmVinny -
      No you are not screwed, just be patient.
    1. chriiis1's Avatar
      chriiis1 -
      Quote Originally Posted by xxzone View Post
      Same issue. I manually added Index of /cydia-3.7/ since my sources were blank, and it started adding the repos, but got stuck downloading again. I could go to updates/refresh before, and it would get stuck doing the same thing.
      It's freaking me out! What do you think may be the cause? Overload on the server?

      Btw, how did you manually add the source? With ssh? If I try, where should i put the downloaded zip?
    1. drWidowmaker53's Avatar
      drWidowmaker53 -
      Quote Originally Posted by bobright View Post
      if we've already updated to 4.0 are we screwed of a future jailbreak (talking 3GS)?
      I would say no if Geohot is talking about releasing a Pwn tool that will jailbreak every i product.....
    1. vojtasks's Avatar
      vojtasks -
      Quote Originally Posted by x| LiB |x View Post
      Update #1: redsn0w beta has been updated to hacktivate iOS 4.0 for iPhone3G (in addition to jailbreaking the iPhone3G and iPod Touch 2G).

      For now, the redsn0w beta release supports only the iPhone3G and iPod Touch 2G at todayís 4.0. Itís still a beta, so youíll need to let Cydia reorganize, reload, and update after using redsn0w.
      Give us link!!
    1. Maarten16's Avatar
      Maarten16 -
      Quote Originally Posted by chriiis1 View Post
      It's freaking me out! What do you think may be the cause? Overload on the server?

      Btw, how did you manually add the source? With ssh? If I try, where should i put the downloaded zip?
      same problem here.. added the repo, got stuck on the end, still white icon...