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Discuss Is 16GB iPhone Downgradeable / Jailbreakable? at the General - Hackint0sh.org; Yes, I think it is possible to downgrade do BL 3.9... BUT you have to ...
  1. #31
    Professional Array jrui's Avatar

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    Yes, I think it is possible to downgrade do BL 3.9... BUT you have to open the phone, and that is a risky thing to do. A very small % of people are willing to do that.

    But than again, the 16Gb iphone could have some hardware differences besides the samsung 16Gb memory module.... And using the test point method on this model could be risky.


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    jrui:
    changed HW is exactly what i fear...

    So we have to wait for the first guy to try a HW downgrade of BL.
    Lets see if he's a bonehead or a hero :-)

    Ender

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    Quote Originally Posted by NerveGas View Post
    I decided to go and buy a 16GB for testing (somebody reimburse me). It does, in fact, jailbreak properly and run on approved networks. Unlocking efforts are still underway, so I wouldn't worry too much about unlocking.
    Thanks for testing this, NerveGas. For me the extra capacity is important so I took the plunge and ordered one to replace my current iPhone.

    Sidenote: if anyone is looking for a good condition 3.9 BL easy to unlock 8 GB unit drop me a PM. All reasonable offers will be considered. If nobody is interested I'll eBay it, but I wanted to give the community here first dibs.

  4. #34
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    Quote Originally Posted by jrui View Post
    Yes, I think it is possible to downgrade do BL 3.9... BUT you have to open the phone, and that is a risky thing to do. A very small % of people are willing to do that.

    But than again, the 16Gb iphone could have some hardware differences besides the samsung 16Gb memory module.... And using the test point method on this model could be risky.
    As Zibri leaked today, since getting voted out of the dev team, there is a software method to unlock the 4.6 bootloader. It isn't quite ready yet, but if you don't feel like taking apart your phone, just have a little patience.
    Last edited by NerveGas; 02-07-2008 at 07:14 PM.

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    Quote Originally Posted by aviegas View Post
    If you can legally activate it, why not!

    You can downgrade to 1.1.1, jailbreakme.com, upgrade to 1.1.2, jailbreak and then soft-upgrade to 1.1.3.

    Then just place your valid German t-mobile SIM card and it will work.
    Sorry for being anoying, but I'm a totally n00b in jailbreaking and stuff.
    I can really use my iPhone for calling, short mail and EDGE data after jailbraking? I signed for an iPhone contract for two years.
    If it won't work, can I reset my iPhone back to its original settings and use it like i've done so far?


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    Quote Originally Posted by Fezi View Post
    Sorry for being anoying, but I'm a totally n00b in jailbreaking and stuff.
    I can really use my iPhone for calling, short mail and EDGE data after jailbraking? I signed for an iPhone contract for two years.
    If it won't work, can I reset my iPhone back to its original settings and use it like i've done so far?
    Yes and yes. The main thing is you have to be a valid customer on the iPhone's native carrier (e.g., AT&T in the US). No unlocking at the moment. In other words if you had a fully functioning legit OTB 1.1.3 iPhone you can jailbreak and still maintain full phone functionality (by first going down to 1.1.1 then back up to jb 1.1.3).

    Don't believe anyone who tells you it can't be done. I have personally done several so far. But if you start out unconvinced that it is possible you will fail. So don't listen to the naysayers, they will cause you to fail!




    --
    Mike

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    Senior Professional Array googs's Avatar

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    What is the best guide to JB a ATT active 16GB iphone running 1.1.3 OTB???

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    Quote Originally Posted by googs View Post
    What is the best guide to JB a ATT active 16GB iphone running 1.1.3 OTB???
    Any of the guides that deal with going up to 1.1.3, then down to 1.1.1 & 1.1.2, then up to 1.1.3 jb. You just need remember that you are already on 1.1.3 so you can begin there.

    The basic steps are:

    1.) Downgrade to 1.1.1 by doing a DFU shift-restore. If done right it will end in Error 1015 (expected!).

    2.) Do another downgrade to 1.1.1, just like above (same 1015 error and all). Don't skip this step!

    3.) Use iBrickr .91 to boot out of recovery mode.

    4.) Use *#306# trick to jailbreak 1.1.1. (Don't forget to set auto-lock to Never.)

    5.) iTunes (I only use 7.6 now) should now recognize your iPhone and ask if you want to setup as new or use backup. Since a 1.1.3 backup won't work under 1.1.1 choose to setup as new (it does not mean setup a new phone number--you will still have the same number).

    6.) Use Installer on the iPhone to install Ocktoprep.

    7.) Shift-update to 1.1.2.

    8.) If iPhone is stuck in restore mode use iBrickr to boot it out. iPhone might not be recognized by iTunes at this point, but carry on anyway.

    9.) Run the latest 1.1.2 jailbreak (jailbreak.jar dated 11/20/2007).

    10.) Use Installer to install "Official 1.1.3 Updater" version 1.1.3-3. Run it from the springboard. (Don't forget to set auto-lock to Never first!)

    11.) Wait around 45 minutes for 1.1.3 jb to finish.

    12.) When finished let iTunes activate iPhone.




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    Mike

  9. #39
    Senior Professional Array googs's Avatar

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    Will SuperSIM work with 1.1.3? If I follow this guide?

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    Yes, there is a hardware Bootloader downgrade available, searc on google. It is located at unlock.no


    iPhone "2G" - 3.1.3 - Jailbroken + iPhoDroid
    iPhone 4 - 4.0.2 - Not jailbroken (yet)



 

 
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