Downgrade from 3.0 to 2.2.1 HELP!!!!!

Discussion in 'iPhone Tips, Help and Troubleshooting' started by marddin, Mar 23, 2009.

  1. marddin macrumors 6502

    Joined:
    Mar 11, 2009
    #1
    So like an idiot, I tried to update the iPhone 3.0 Beta software on my iPhone, without having a developers account or anything. I completed the update to 3.0 and it told me that since i wasn't a registered member that my iphone did not update correctly.

    Now i have a bricked iPhone.

    I looked EVERYWHERE for the iPhone Firmware 2.2.1 or 2.2 and I found it multiple times but every time i download it here on my macbook it downloads a zip file, i use archive utility to unzip the file and instead of getting an icon that looks like this....
    [​IMG]

    i get a folder with all this junk in it....
    [​IMG]

    all i need is the iPhone Firmware 2.2.1 .ipsw file and i can (option-click) it and restore, but everytime i download the so called "Firmware 2.2.1.ipsw it turns out to be that picture up above, a folder with a bunch of junk in it.

    I figured i would rename the .zip file of the firmware to a .ipsw file, tried it and got this error....
    [​IMG]



    please. any help would be so grateful..........i have a bricked white iPhone 3G on my hands :(
     
  2. mohicanspap macrumors regular

    Joined:
    Jul 19, 2008
    #2
    Well you can get the .ipsw file here: http://iclarified.com/entry/index.php?enid=1881

    But i think when you upgraded your phone to 3.0 it also upgrades the baseband and that baseband will not work for 2.2.1. You will need to do some extreme baseband hacking. I hope you know how to do that. Good Luck. Sorry I couldnt be more helpful
     
  3. MaTiCeK macrumors member

    Joined:
    Apr 15, 2006
    #3
    Do people have any side effects because of downgrading?

    As far as I know the new baseband works just fine with 2.2.1, so don't scare people.
     
  4. lostfan916 macrumors 6502a

    lostfan916

    Joined:
    Dec 23, 2007
    Location:
    NorCal
    #4
    You're supposed to change the .zip file to .ipsw I believe.

    And you don't need to download 2.2.1, it's stored in iTunes. Just follow the many, many instructions out there to downgrade.

    And yes, you will have a fully functional phone once again.
     
  5. cpmartin2007 macrumors newbie

    Joined:
    Mar 19, 2009
    #5
    hey man i got a dev account and would be willing to help you if you havent figured it out also if you create a custom rom it will down grade the baseband and yes the 2.2.1 and 2.2 will not work on the baseband established in 3.0 because of new features
     
  6. jmccullough108 macrumors 6502a

    jmccullough108

    Joined:
    Nov 2, 2008
    Location:
    St. Louis, MO
    #6
    Rename the ZIP file to .ISPW

    If you are on 10.5.6, make sure you run the usb drivers from 10.5.5.. (search for how to enter dfu mode on mac)

    Errors >100 mean you didn't enter DFU mode correctly..

    You are looking for an error along the lines of 10xx... search the other threads on how to restore after you get that error.. You may need to bootcamp into windows to run windows quickpwn, because I can't get it to work on my mac..
     
  7. seanyboy0819 macrumors newbie

    Joined:
    Mar 24, 2009
    #7
    Please!!!

    is there a way i could use your dev account for my phone. i really dont want to by in but i will. email me
     
  8. CHRISCC18 macrumors newbie

    Joined:
    Mar 31, 2009
    #8
    messed up mu ipod touch =[

    is there any way i could use ur dev. account?? i really need my ipod back n i cnt sync it since im not a developer =/plz answer asap here or at moneywhore17@yahoo.com
     
  9. kate-willbury macrumors 6502a

    Joined:
    Feb 14, 2009
    #9
    lol @ morons like you
     
  10. rj8911 macrumors newbie

    Joined:
    Apr 8, 2009
    #10
    help to downgrade from 3.0 to 2.2.1

    i had a iphone working fine with 2.2 firmware than i installed iphone 3.0 beta through iTunes.Installation complete without any error than it show the message insert valid sim card.than i tried to jailbreak my iphone with unofficial quickpwn jailbreak software beta 2 but its shows message like this your firmware don't match,

    then i downgared to 2.2.1 than without jailbreaking it i again downgrade it to 2.2 now i have 2.2 firmware but baseband is changed to 4.20.01 so i cant get signal..

    i had jailbroken iphone so i m not registrade member to apple so help me plzzzzzzzzzz

    thanks in advance to all...help me
     
  11. rj8911 macrumors newbie

    Joined:
    Apr 8, 2009
    #11
    help to downgrade from 3.0 to 2.2.1

    --------------------------------------------------------------------------------

    i had a iphone working fine with 2.2 firmware than i installed iphone 3.0 beta through iTunes.Installation complete without any error than it so the message insert valid sim card.than i tried to jailbreak my iphone with unofficial quickpwn jailbreak software beta 2 but its shows message like this your firmware don't match,

    then i downgared to 2.2.1 than without jailbreaking it i again downgrade it to 2.2 now i have 2.2 firmware but baseband is changed to 4.20.01 so i cant get signal..

    i had jailbroken iphone so i m not registrade member to apple so help me plzzzzzzzzzz

    thanks in advance to all...help me
     
  12. enkadrummer88 macrumors member

    Joined:
    Jul 18, 2007
    Location:
    North Carolina
    #12
    You have to download it from Firefox. Safari automatically does it in a zip file which essentially ruins the file, mo matter what you change the extension to afterwards.
     
  13. rj8911 macrumors newbie

    Joined:
    Apr 8, 2009
    #13
    Dont update to iphone os 3.0 beta 2 it crashes ur iphone

    I have tried to update to iphone os 3.0 beta 2.
    I installed it succsesfully than jailbroke it..
    Than it worked fine but when i turn off it once and tried to
    Turn it on it was stuck on apple logo....i have lost my iphone once its shown
    windows blue screen on iphone memory dumping

    So dont upgrade to iphone os 3.0 beta 2 if u want ur IPHONE anymore.......
     
  14. bjoli14 macrumors newbie

    Joined:
    Jun 8, 2009
    #14

    im having a problem downgrading firware so if you could please help me i would greatly appreciate it. bjoli@swbell.net is my email
     
  15. Micah643 macrumors newbie

    Joined:
    Dec 4, 2008
    Location:
    Alabama
    #15
    I don't think it is possible to downgrade

    Hi. I have the gold master build of iPhone 3.0 OS on my iPhone 3g.

    I would like to downgrade to 2.2.1

    I put my phone in DFU properly and hit alt + restore. I chose the 2.2.1 build_5H11_restore.ipsw file under username-library-itunes-iphone software updates.

    However, after "extracting software," I get error (20) saying that it can't restore the iphone. I have been playing with it a lot. I can put the 3.0 back on no problem, but how in the world do I downgrade to 2.2.1 again????

    Thanks for the help
     
  16. Dragonlance1561 macrumors member

    Dragonlance1561

    Joined:
    Aug 16, 2007
    #16
    Lesson for all other iPhone users out there:

    Just wait till June 17th for OS 3.0
     
  17. Micah643 macrumors newbie

    Joined:
    Dec 4, 2008
    Location:
    Alabama
    #17
    More information

    *Dragonlance* True, but even after the wait the same problem would be occurring due to the firmware.

    ****Update****
    After diligent searching everywhere, I may have found a solution. I have yet to try it, but you can find the information here:
    http://www.hackint0sh.org/forum/f201/75172.htm

    Basically itunes 8.2 will not allow you to do it, thus you have to first downgrade itunes 8.2 to itunes 8.2beta.

    I'll try it soon at report back.

    Hope this helps, and if anyone has further comments let me know.

    Peace
     
  18. Dragonlance1561 macrumors member

    Dragonlance1561

    Joined:
    Aug 16, 2007
    #18
    No he said :
    If he had waited till june 17th this problem, the entire issue here, would not have occurred because the update would have worked properly.
     
  19. studia macrumors newbie

    Joined:
    Jul 29, 2009
    #19
    IF still getting 160x error, Try this method
    Originally Posted by xtronic from hackint0sh.org
    —————————————
    You can still downgrade 2G iPhone to any firmware even 2.2.1 using my method

    You will need ..
    1-QuickPwnRC3 download from here ( iphone-hacks.com/downloads/file/138
    2-2G Ipsw 2.0.2
    3-iTunes 8.2
    These steps is to put the iPhone in a mode to allow iTunes to restore to lowers ipsw, if you do DFU the normal way iTunes will give all possibele errors such as 1600, 1601, 20 etc.
    Now follow my steps..
    A-Open QuickpwnRC3 and follw the steps and select 2.0.2 IPSW and when the screen turn to White color , unplug the USB ( Screen will remians White color).
    B-Disconnect QuickpwnRc3
    C-Reconnect iPhone
    D-iTunes will discover iphone in Recover mode.
    E-Shift+Restore to 2.2.1 (with Quickpwn 2.2.5 – http://daniel14.com/QuickPwn-225-2.zip)

    Itunes continues the restore process without any erorr

    100% works on booth 2G-3G
     

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