4.2.1 official - want to jb and tether

Discussion in 'Jailbreaks and iOS Hacks' started by cmm, Dec 18, 2010.

  1. cmm, Dec 18, 2010
    Last edited: Dec 18, 2010

    cmm macrumors 6502a

    Apr 30, 2006
    Hi all,

    I'm writing this in case I can't restore to 4.1. I am using Apple's office iOS 4.2.1. I have an iPhone 3GS.

    How do I jb this version? Is there a tethering hack for this version (I have AT&T unlimited data plan and want to be able to tether like I could on 3.1.2)? If not, and I can't get back to 4.1, is there ANY way I can tether again?

    Finally (and probably most importantly), what is the best site to keep checking for news about jailbreaking/unlocking/general hacking the iPhone? I really don't know where to check to stay current and see what's available. Is iPhone Dev Blog the best resource? From what I have seen, it seems there is A LOT of information, scattered all around. For instance, how do you figure out which is the best jb software to use?

    Thank you!

    This is the entire list of files in ~/.shsh:

    3354604965262-iphone-4.1.shsh 3354604965262-iphone-4.2.1.shsh.1.bak
    3354604965262-iphone-4.1.shsh.0.bak 3354604965262-iphone-4.2b3.shsh
    3354604965262-iphone-4.1.shsh.1.bak 3354604965262-iphone-4.2b3.shsh.0.bak
    3354604965262-iphone-4.2.1.shsh 3354604965262-iphone-4.2b3.shsh.1.bak

    In Pwnage Iphone 3GS folder I created when I originally jb 4.1 I have:

  2. PsstGreek macrumors 68040


    Oct 21, 2010
    Tampa Bay
    You can tether with MyWi ($19.99 - one time $) from Cydia. I believe it will still work on 3.1.2

    As long as you have the SHSH files saved for an iOS version, you can always restore back to it.

    For the 3GS the new jailbreak on 4.2.1 is a tethered one. Meaning every time your iPhone reboots or the battery dies you need to run Redsn0w to turn your device back on. This only applies to new bootrom 3GS iPhones.

    Yes, the iPhone Dev Blog is one of the best resources if not the best. They are the creators of Redsn0w and Ultrasn0w.
  3. Justinb51 macrumors 6502


    Apr 9, 2010
    Indianapolis, IN
    To keep up with what is going on with the current jailbreak and unlock is the only reason i started a twitter account. I just follow the guys that make the jailbreak programs. They let you know what is going on.
  4. eastercat macrumors 68040


    Mar 3, 2008
    It looks as though you have the SHSH blobs for 4.1, although I would d/l Tiny Umbrella to save the blobs to your computer, and the firmware for 4.1.
    You can either edit your host file or use Tiny Umbrella to trick apple into letting you install 4.1. If you install the custom firmware, you shouldn't have to do any additional jb steps. If you install the standard firmware, you'll have to perform the jb step (see iclarified for tutorials).
    I suggest backing up all your data before you start. Don't restore from backup. Install the ios on a clean phone; it's less trouble that way. Once you're satisfied that everything is kosher, then start synching your music, apps, etc. You don't want to have finished a first time synch to find out that you somehow screwed up your jb. That kind of thing is frustrating and can lead to mistakes.

    edit: If you don't need to turn your iphone into a hotspot, TetherMe will tether your phone to a computer and does it for $1.99; you'll have to buy itether if you want to tether your ipad to the phone. If you're trying to hook up multiple devices, then you'll need MyWi.

  5. MaxBurn macrumors 65816


    Nov 25, 2010
    If you are old bottom for 3GS you can have untethered jailbreak with redsn0w. Otherwise tethered for 4.2.1.
  6. cmm thread starter macrumors 6502a

    Apr 30, 2006
    I tried to re-install 4.1 by following advice here and in this thread. When I get error 22, I went to TinyUmbrella and clicked "exit recovery" (from the kick device out of recovery line). I did. Phone started and still says 4.2.1. I restarted the iPhone manually, and still 4.2.1.

    I tried this with my custom IPSW. Should I go the standard 4.1 firmware, then jb afterwards?

  7. TheShinyMac macrumors 6502a


    Apr 3, 2009
    I am in your same situation but with a new replacement 3gs from Apple with 4.1 please let me know what your doing

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