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Discuss [GUIDE] Downgrade baseband from 1.1.4 to 1.1.3 at the iPhone "2G" (Rev. 1) - Hackint0sh.org; Hey everyone, Here is how to downgrade the baseband from 4.04.15_G (1.1.4) to 4.03.13_G (1.1.3) ...
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    Exclamation [GUIDE] Downgrade baseband from 1.1.4 to 1.1.3

    Hey everyone,

    Here is how to downgrade the baseband from 4.04.15_G (1.1.4) to 4.03.13_G (1.1.3)

    NOTE: THIS IS FOR 3.9BL ONLY

    To do a full baseband and software downgrade:

    1 -Put iPhone into DFU mode (if you are not sure how, use ziphone)
    2 -Click Shift + Restore in iTunes and select the 1.1.3 firmware
    3 -At the end, iTunes will give error 1015. Thais a good thing it means the OS downgrade was successful. Use ibrickr or independence or whatever to get out of recovery mode.
    4 -Jailbreak using ZiPhone GUI, available from www.ziphone.0rg (replace 0 in 0rg with o). Click the boxes for Jailbreak and activate (and SIM unlock if you wish) and click whatever button starts the ZiPhone process (varies from windows to mac etc)
    5 -Go into settings -> general -> auto lock and set to never
    6 -In installer.app add the source http://www.appledailytimes.com/installer
    7 -Go back to the install tab. There should be a category called "Apple Daily Times"
    8 -Go into the Apple Daily Times category and install 1.1.4 - 1.1.3 baseband downgrader.

    -(If there are any errors let me know by emailing me: william@appledailytimes.com

    9 -Wait a while as the baseband is downgraded
    10 -Done!

    If you are on 1.1.4 and want to stay on 1.1.4 but have the 1.1.3 baseband:

    -Start from number 5 in the guide above

    AGAIN, IF THERE ARE ANY PROBLEMS, PLEASE FEEL FREE TO EMAIL ME: william@appledailytimes.com

    Have fun,
    -secretmrx
    http://www.appledailytime$.com (replace $ with s)
    Last edited by secretmrx; 03-08-2008 at 07:09 AM.



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    You might want to highlight that this only works on iphones with BL 3.9.
    Also, is this harmless to apply to IPSF-style unlocked phones without first reverting the seczone back to a virgin state?

    Cheers

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    Default It can be used on ipsf unlock

    Quote Originally Posted by sh1n1gam1 View Post
    You might want to highlight that this only works on iphones with BL 3.9.
    Also, is this harmless to apply to IPSF-style unlocked phones without first reverting the seczone back to a virgin state?

    Cheers
    Cool. Just edited it to say BL3.9 only

    And yes, this can be allpied to an ipsf-style unlock, as it dies not touch the seczone. When you do a restore to the same version or higher in iTunes, iTunes does the same thing: runs bbupdater. (eg if I restore 1.1.3 to 1.1.3 or higher iTunes will run bbupdater to reflash the baseband)

    The only difference here is you are deleting the baseband (nowhere near the seczone) and then running bbupdater to put the baseband back - in this case, a lower one then when you started.

    In fact, you can find bbupdater in the iPhone software restore file.

    You could even run ieraser (to erase baseband) and then restore in iTunes in DFU mode to the previous version. You wouldn't get error 1015, because 1015 means "I can't restore the baseband because its a lower one than the current one" iTunes would happily see "oh, there isn't a baseband here. I better put it back" and then you also would have downgraded your baseband.
    Last edited by secretmrx; 03-03-2008 at 10:54 AM.

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    secretmrx, thanks for the explanation regarding bbupdater and ieraser!

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    yes, thank you. it's great to get an idea of what's actually going on.

    Is it possible to Restore the OS Firmware WITHOUT restoring the Baseband? The reason I ask, I'm on 1.1.3 using 04.04.05_G Baseband already, and was thinking if I didn't restore the Baseband when restoring to 1.1.4 that it would still be unlocked?
    Last edited by ramb0; 03-03-2008 at 01:29 PM.


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    ramb0, an iTunes restore will not rewrite the baseband if the iphone has the same version of the baseband as the target restore. If you already have 04.04.05_G on your iphone restoring / upgrading the OS firmware to 1.1.4 should leave your baseband intact (and unlocked).

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    Question

    I thought so too, but

    Quote Originally Posted by secretmrx View Post
    When you do a restore to the same version or higher in iTunes, iTunes runs bbupdater. (eg if I restore 1.1.3 to 1.1.3 or higher iTunes will run bbupdater to reflash the baseband)
    UPDATE: I just performed a restore from 1.1.3 to 1.1.4. I already had the 04.04.05_G Baseband loaded & unlocked while on 1.1.3, and i can confirm when I did the restore to 1.1.4 that it was already unlocked and i just had to jailbreak & activate.
    Last edited by ramb0; 03-04-2008 at 05:03 AM.

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    Talking

    Quote Originally Posted by ramb0 View Post
    I thought so too, but



    UPDATE: I just performed a restore from 1.1.3 to 1.1.4. I already had the 04.04.05_G Baseband loaded & unlocked while on 1.1.3, and i can confirm when I did the restore to 1.1.4 that it was already unlocked and i just had to jailbreak & activate.
    yeah, its confusing, but for some reason anysim unlocked basebands seem to stay unlocked during a reflash of the baseband to the same firmware.

    BY THE WAY, HAS ANYONE USED THIS YET? If you have LET ME KNOW

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    I didn't use Anysim for Unlocking 04.04.05_G Baseband (1.1.4)

    FYI; I restored via iTunes to 1.1.4. Entered DFU Mode, and restored back to 1.1.3. Okay, so I was on 1.1.3 OS with 1.1.4 Baseband (04.04.05_G). Used the package Unlock (1.1.4) by iClarified to unlock, worked. So I was using 1.1.3 with .04 Baseband for a few days, then today I restored back to 1.1.4 and it was already Unlocked.
    Last edited by ramb0; 03-04-2008 at 01:58 PM.

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    HEY EVERYONE, I JUST FIXED THIS. TESTED ON MY IPHONE AND IT WORKS!!!


 

 
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