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  • "Backup Plan:" Untethered 4.2.1 JB Coming for All Devices
    [ame=http://www.youtube.com/watch?v=WVZ5MDPVHWU]YouTube - Untethered 4.2.1 JB on ipt4g[/ame]


    A tweet from @MuscleNerd last night revealed a workaround he's done for an untethered jailbreak of iOS 4.2.1 on the fourth-gen iPod touch. Using saved SHSH blobs from 4.2 beta 3, the method doesn't use expose any of the known holes that are used in the current set of exploits: it's a "backup plan" to the userland method that @comex is working on.



    @MuscleNerd's method can be generalized for use with all devices (including the Apple TV 2G) and is reusable for future jailbreaks. @comex's method is, he says, "more extensible" though.

    No updates yet as to when this will be released, but we'll let you know as soon as we find out.
    This article was originally published in forum thread: "Backup Plan:" Untethered 4.2.1 JB Coming for All Devices started by Paul Daniel Ash View original post
    Comments 92 Comments
    1. iNT3Rv3NTiONZz's Avatar
      iNT3Rv3NTiONZz -
      Finally I'll be able to go to 4.2 yay!
    1. IUiPodRepair's Avatar
      IUiPodRepair -
      At this point I am more interested in the BB downgrade that MuscleNerd is talking about.

      Twitter / MuscleNerd: @Lezanz sorry still collec ...
    1. Cowboy's Avatar
      Cowboy -
      Ya that will be interesting
    1. GrandMstrBud's Avatar
      GrandMstrBud -
      Quote Originally Posted by IUiPodRepair View Post
      At this point I am more interested in the BB downgrade that MuscleNerd is talking about.

      Twitter / MuscleNerd: @Lezanz sorry still collec ...
      Same here, would love an unlock on the iPHone 4 running 4.1
    1. shitake83's Avatar
      shitake83 -
      thats would mean people without SHSH blob of former Firmware would be able to downgrade their BB ??


      Sounds kinda cool.
    1. zoso10's Avatar
      zoso10 -
      That'll be nice when it comes out, but 4.2 only iPhone isn't a necessity. It'll be more if a convenience for my iPad though!!
    1. shitake83's Avatar
      shitake83 -
      yeah for sure. im not downgrading on the iOS nor the BB on the 3GS anyway cuz it works like a charm. so the way to go is forward anyway

      and i think my 3G will run 4.1 for the next time beeing. if i could i would downgrade back to 3.1.3 but no shsh :/ people say its way faster on 3.1.3
    1. thacarta1's Avatar
      thacarta1 -
      Im glad for all the progress that comes from this camp and it seems 2 always come when they aren't being harrased! LETS GET IT JB COMMUNITY!!
    1. MetallicaFan1991's Avatar
      MetallicaFan1991 -
      Quote Originally Posted by shitake83 View Post
      My "problem" starts on page 2 post #23 , thats where i started you can read everything i did in this thread.

      just to remind you i started with a black screen dfu loop. so i had some of the worst things that can happen ^^

      3GS stuck in recovery loop
      Proof?
      Without pictures or a video, you can't prove anything. Your posts aren't proof.
    1. ggab's Avatar
      ggab -
      Quote Originally Posted by haibane View Post
      How did he get cydia to load so fast? Mine takes about 2 minutes usually
      The new version of Cydia is very fast. There's a story here about it and tells you how to install it.

      As far as when it's coming out...in one of his posts he said "tonight's method". Think he means it's being released tonight? Hmmmm
    1. buttrr76's Avatar
      buttrr76 -
      My tethered jb crashed this morning on my ip4 on 4.2. I got stuck in emergency mode. Just restored my phone at work now I'm stuck with a plain phone all day. Anyone else have this issue?
    1. mp5a2's Avatar
      mp5a2 -
      Anyone help out with this? What package was he using for console access on the device. Probably missed the boat on this, but was unaware there were any console packages for FW 4.x +

      Thanks..
    1. saunupe1911's Avatar
      saunupe1911 -
      Quote Originally Posted by buttrr76 View Post
      My tethered jb crashed this morning on my ip4 on 4.2. I got stuck in emergency mode. Just restored my phone at work now I'm stuck with a plain phone all day. Anyone else have this issue?
      No disrespect, but there's only a few of u that were crazy enough to install a tethered jailbreak, especially when you were warned that this would happen. I hope you get an answer though.

      On a positive note, how was the performance? Is it worth upgrading to at all?
    1. MrLaTtEa's Avatar
      MrLaTtEa -
      Yes! Thanks now All we need is a safe unlock lol
    1. CaryDude's Avatar
      CaryDude -
      Quote Originally Posted by mp5a2 View Post
      Anyone help out with this? What package was he using for console access on the device. Probably missed the boat on this, but was unaware there were any console packages for FW 4.x +

      Thanks..
      That app is called iSSH and it's the bomb!!! It's a little pricey, but very full featured and worth it to have good CLI access.

      iSSH - SSH / VNC Console for iPhone, iPod touch, and iPad on the iTunes App Store
    1. buttrr76's Avatar
      buttrr76 -
      Quote Originally Posted by saunupe1911 View Post
      No disrespect, but there's only a few of u that were crazy enough to install a tethered jailbreak, especially when you were warned that this would happen. I hope you get an answer though.

      On a positive note, how was the performance? Is it worth upgrading to at all?
      I knew the risk. Just curious if anyone else has had that issue. I don't mind it. And I highly appreciate the dev team for all their work. I remember the good o days of jb my 2g in terminal on my mackbook pro.
    1. theroyalwe's Avatar
      theroyalwe -
      If anyone notices this I had a very simple question to ask just out of curiosity. First of all I'm using an iPhone 4 with Firmware 4.1 jailbroken with redsn0w 0.9.4 (I believe) I also have SHSH blobs saved from 4.1, 4.2b3, 4.2.1 etc.. If I were to update and jailbreak (tethered) to 4.2.1 using the latest redsn0w, would I be able to later when it's released, jailbreak 4.2.1 untethered? or would it be more complicated then that in the long run? Basically what would make it worth jailbreaking tethered to 4.2.1 for me?
    1. Turb02's Avatar
      Turb02 -
      My i4 is still running 4.0. I have been putting updating off as I have my phone the way that I want it and I dont want to have to redo my themes...I might just do the 4.2.1 after muscle's JB is released.

      Awesome work everyone that contributed to the JB effort.
    1. Jay316's Avatar
      Jay316 -
      iPhone 4 unlock too?
    1. mortopher's Avatar
      mortopher -
      Quote Originally Posted by theroyalwe View Post
      If anyone notices this I had a very simple question to ask just out of curiosity. First of all I'm using an iPhone 4 with Firmware 4.1 jailbroken with redsn0w 0.9.4 (I believe) I also have SHSH blobs saved from 4.1, 4.2b3, 4.2.1 etc.. If I were to update and jailbreak (tethered) to 4.2.1 using the latest redsn0w, would I be able to later when it's released, jailbreak 4.2.1 untethered? or would it be more complicated then that in the long run? Basically what would make it worth jailbreaking tethered to 4.2.1 for me?
      Yes, it is perfectly okay to update and run the tethered jailbreak for now. The worst case scenario would be that you'd simply have to restore to a stock 4.1 or 4.2.1 and then rejailbreak it when the untethered option is released.

      As far as what's worth it to jailbreak tethered, that's really up for you to decide. It isn't a huge deal, being tethered that is, especially if you're like me and tend to have your nearby the majority of the time. I have my iPad on the tethered jb and have mobile substrate based apps on it (that is what requires you to re jb after each boot) and so far I have not had to rejailbreak it at all other than when i've installed new cydia packages that require a reboot to finish installing. The only thing stopping me from doing it to my iPhone 4 is that i'm still on bb 1.59.0 and want to keep it unlockable simply for future resale value. As soon as there's a way to update to 4.2.1 while preserving the baseband I will update in a heartbeat, even if it's tethered.