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Discuss My Successful Downgrade [3.1>3.0 on 3G] WITH Carrier Network (Canada>Rogers-Fido) p1 at the iOS 3.x (iPhone OS 3.x) - Hackint0sh.org; ...
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    Default My Successful Downgrade [3.1>3.0 on 3G] WITH Carrier Network (Canada>Rogers-Fido) p1

    Hi all, First & foremost I would like to give a shout out to Saurik for figuring out Apple's Signature Server, and also to Bondkt on ModiMyIphone who gave me the last piece to the puzzle.

    You can read about Saurik's solution here:
    Caching Apple's Signature Server - Jay Freeman (saurik)
    And you can read Bondkt's post here:
    http://modmyi.com/forums/3g-s-downgrading/684505-downgraded-3-1-3-0-but-no-network-2.html[/URL]

    Ok - so down to the steps that I did to get my Rogers and Fido phones working.

    I have done this now 4 times on my phone and also on friends & family phones with the same success consistently.

    There are some posts out there that mention that you do MIGHT NOT have to do ALL of these steps, but I've found that if you are not 100% sure of what was done BEFORE doing these steps, instead of trying to guess, just to do all the steps anyways, as it might only take an extra 5 to 10 minutes all of the steps that are considered “extra”.
    The perfect example of this would be that I've been playing with my phone since before Sept 12th and my buddy since Sept 9th and we must of upgraded / downgraded / DFU'ed / Restored DOZENS of times before we got it right with the help of forums & YouTube & the community. We've always been successful getting the firmware back down to / up to version 3.0, however we would always lose our carrier network connectivity after the Jailbreak / Downgrade process, until now.

    Here are my environment settings (from iPhone "Settings" > "About" screen):
    Code:
    Phone = iPhone 3G - 8 GB - Black
    Network = Rogers (or Fido)
    Line = Rogers (or Fido)
    Version = 3.0 (7A341)
    Carrier = Rogers 4.0
    Model = MB629C
    Modem Firmware = 05.11.07
    (Baseband)
    Here are the software apps that I used:

    iTunes version 8.1.1:
    (Newer version of iTunes like 8.2.x or 9.x will probably work as well, but I did not test these. Try your current version of iTunes, and if it does not work, do a full Uninstall iTunes via Windows "Add / Remove Program", and Re-Install iTunes using version linked below)
    Click Here for iTunes version 8.1.1 from MegaUpload
    iPhone 3.1 Firmware:
    Click Here for iPhone 3.1 Firmware from MegaUpload
    iPhone 3.0 Firmware:
    Click Here for iPhone 3.0 Firmware from MegaUpload
    QuickPwn App:
    Click Here for QuickPwn App from MediaFire
    Redsn0w App:
    Click Here for Redsn0w App from MegaUpload
    (Optional) DFU Force:
    Click Here for DFU Force App from MegaUpload

    *** NOTE: the iPhone Firmware Links above are ONLY for iPhone 3G and NOT iPhone 2G or iPhone 3Gs. If you are not using an iPhone 3G, please find the same version firmware built specifically for your phone.


    Step by Step:

    1. Connect your phone to your PC via USB and launch iTunes
    2. Get your phone into DFU mode (2 different ways)
    ----a. Instructional Article: How_To:_Enter_DFU_Restore_Mode[/URL]
    ----b. Software App Tool: DFU Force
    3. iTunes will recognize that your iPhone is in recovery mode



    4. In iTunes, while holding down SHIFT on your keyboard, mouse-click on the RESTORE button.

    [IMG]http://www.*********.com/images/stories/posts/unlock-iphone-itunes.jpg[/IMG]

    5. Browse to and select your iPhone 3.1 Firmware.
    6. Sit back and let Update run. This will take a few minute while you see Apple logo on your iPhone with Progress bar.

    http://cazisoft.com/wp-content/uploa...e-progress.jpg

    7. After this restore, and the phone boots up, you SHOULD have Carrier Network Services. In our cases, it is either Rogers or Fido, but it should be whatever carrier your SIM card is set to.






    *** NOTE: At this point, if you are still not connected to your respective Carrier Network, then I would suggest you do not continue further with these steps. You could of course repeat Steps 1 to 7 again if you have any doubts, but if you still are not connecting, then these steps no longer apply to you and you should start doing research for an alternative method.

    8. Close iTunes.
    9. Open your Windows "hosts" file with NOTEPAD. Typical location:
    Code:
    C:WindowsSystem32driversetchosts
    Here's an example of what the "hosts" file looks like:



    10. Add the following line to the END of your "hosts" file:
    Code:
    74.208.105.171 gs.apple.com
    11. Save & Close your "hosts" file.
    12. Re-Launch your iTunes.
    13. Do another RESTORE as you did in steps 2 to 6 > However this type select iPhone Firmware version 3.0
    14. At the end of the Update (similar to process in Step 6), you will get an error in iTunes - DON'T WORRY, THIS IS SUPPOSED TO HAPPEN:
    Code:
    The iPhone "iPhone" could not be restored. An unknown error occurred (1015).
    http://www.touchelp.com/wp-content/u...-code-1015.png

    15. Clear the error in iTunes by clicking "OK". Your phone should now be in RECOVERY mode (and not DFU mode). See image below. If you are not sure what mode your iPhone is in, just put it back into DFU mode as explained in step 2.



    16. You now need to REPEAT for a SECOND time the RESTORE process as explained in Step 13, RE-Selecting the iPhone Firmware version 3.0. You will be essentially repeating steps 4 to 6 AGAIN, except for the firmware version.
    17. You will ONCE AGAIN see the SAME error as you did in Step 14. ONCE MORE, THIS IS NORMAL AND YOU SHOULDN'T WORRY.
    18. Close iTunes.


    *** CONTINUED IN P2 ***
    Last edited by chrischarles2002; 09-17-2009 at 04:48 AM.



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    Well, my own personal expericience downgrading.. I used iTunes 9.0 and restored to 3.0.1. as expected got the 1015 error which is normal, it got into DFU mode automatically.... then i tried iRecovery in a windows XP pc (i tried it with VISTA and the USB drivers that come with iRecovery don't work) and it worked fine my iphone was rebooted and it was up and alive with 3.0.1. then I proceeded with redsn0w and used 3.0 to jailbreak 3.0.1. (redsn0w was used in vista) then I had to set up the iphone as a new one since the backup created was for a newer version...

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    Was your phone originally with locked to att on 3.1 and modem firmware 05.11.07? with no previous jailbreaking or unlocking?
    Last edited by bmw2k1; 09-17-2009 at 06:12 AM.

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    DO NOT even attempt to do this on your iphone 3GS if you don't have your ecid/shsh stored on Saurik's server.

    step 9 above: the hosts file on windows platform is located in c:\windows\system32\driver\etc

    It is pure stupidity to restore with firmware 3.1 to your phone because you will update your baseband to 05.xx.xx. You cannot unlock with this baseband.
    Eventhough you can downgrade the OS but the baseband is not downgradable (unless your 3G has 5.8 Bootloader)

    DO NOT RESTORE YOUR PHONE WITH APPLE ORIGINAL FIRMWARE 3.1 ON YOUR IPHONE 3G/3GS

    The original post is all over the place and contains errors.

    - if you are on a 3G, there is no need to modify the /ect/hosts or c:\windows\system32\drivers\etc\hosts file. This modification only applies to iphone 3GS
    - The link to firmware is for iphone 3G hence step 9 is nonsense.

    People please be careful when you post information like this. I know you want to help but post like this is dangerous.
    Last edited by dtube; 09-17-2009 at 07:24 AM.
    ** If you just want to support hackint0sh.org with a donation click here **

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    thanks for the info, but it did not work...

    <<< one of the 3.1 upgrade victims


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    tried iRecovery in a windows XP pc
    Yup > I went that route as well > but becuase of the baseband already being updated on my phone(s) [given to me that way] > I was not able to get onto the carrier network. I would always have the "Searching...." or the "No Signal" status from the iPhone. The steps that I shared is what has worked now for 9 total 3G (and not 3Gs) phones.


    Was your phone originally with locked to att on 3.1 and modem firmware 05.11.07? with no previous jailbreaking or unlocking?
    That is EXACTLY right, the phones that I am helping to fix are mostly phones that people just did full auto-updates via iTunes and then could not Jailbreak and / or attempted to Jailbreak and bricked their phones. The method I'm sharing is just what worked for us and we have all now got working / jailbroken iPhones.

    ...DO NOT even attempt to do this on your iphone 3GS...
    As I state in the subject line, it's for our 3G phones (no testing on 3GS or 2G phones)


    step 9 above: the hosts file on windows platform is located in c:\windows\system32\driver\etc
    Thanks for fixing that, the "paste" must've removed the slashes in between words


    It is pure stupidity
    Harsh words sir


    restore with firmware 3.1 to your phone because you will update your baseband to 05.xx.xx. You cannot unlock with this baseband.
    Eventhough you can downgrade the OS but the baseband is not downgradable (unless your 3G has 5.8 Bootloader)
    Yes - you are absolutely right, but if you look at my original post, the baseband is ALREADY updated (Environment Settings). This was the problem we faced over the weekend that with this baseband, we could not get back onto our respective carrier networks. But using these steps for our 3G phones, we have now been able to get back on. For sure, if your baseband is not 05.11.07 > then the other methods out there such as iRecovery and / or Downgrading to firmware 2.2.1 and then using something like DownBB from Cydia > I know this has worked for others NOT already on baseband 05.11.xx. I was just trying to help those that are already at 05.11.xx and can't join their network.



    N'ways, from what I'm seeing around the way, there is a new Ultrasn0w that might be up & working, so this post is sure to become obsolete in the near future.

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    interested in reading the rest of your tutorial.. it says continued on PG 2, where is page 2??

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    I re-submitted - but I do not see it on the board.

    I've posted the same article on a couple of other popular iPhone boards with the same subject - I don't think I'm allowed to mention them here. You could PM me if you like and I'll reply with P2.

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    That's ok, I figured out how to get my custom 3.1 FW loaded. Nice pictures though, you have a blog?

 

 

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