How do i revert to OS 2.2.1 from 3.0GM?

Discussion in 'iPhone' started by brisweeney, Jun 17, 2009.

  1. brisweeney macrumors regular

    brisweeney

    Joined:
    Jun 4, 2008
    Location:
    Dublin,Ireland
    #1
    when i hit restore on my iPhone i get an error message, i want to revert back to 2.2.1 and then get the proper release on 3.0, to see if there are any tweeks/differences
     
  2. Maclver macrumors 68020

    Maclver

    Joined:
    Nov 23, 2008
    Location:
    36°07′53″N 95°56′14″W
    #2
    I don't believe you can!
     
  3. waterskier2007 macrumors 68000

    waterskier2007

    Joined:
    Jun 19, 2007
    Location:
    White Lake, MI
    #3
    im pretty sure you cant revert from 3 to 2.2.1
     
  4. iCantwait macrumors 65816

    iCantwait

    Joined:
    Sep 3, 2007
    Location:
    Melbourne, Australia
    #4
    and that is why you wait the one week until the official release comes out, so you don't screw yourself over:rolleyes:
     
  5. BryanLyle macrumors 6502a

    BryanLyle

    Joined:
    Aug 2, 2005
    #5
    So, what about developers that upgraded to 3.0GM on an iPod touch? At some point, Apple is going to want their $9.95.
     
  6. brisweeney thread starter macrumors regular

    brisweeney

    Joined:
    Jun 4, 2008
    Location:
    Dublin,Ireland
    #6
    its not screwing myself over, its just curiosity to see if the official release opens tethering for me, as the GM didnt for O2 IRE
     
  7. eh270 macrumors regular

    Joined:
    Mar 19, 2009
    #7
    Run this command in your Terminal.app:

    curl -s -L http://phobos.apple.com/version | grep -i restore

    Find the .ipsw file for your iPHone model (3G = 2,1 and 2G = 1,1) for 2_2_1, open that URL in safari, then option-click the 'check for updates' in iTunes and select the downloaded .ipsw file.
     
  8. NStocks macrumors 65816

    Joined:
    Apr 3, 2008
    Location:
    England
  9. revs macrumors regular

    Joined:
    Jun 2, 2008
    Location:
    Worcestershire
    #9
    GM = Golden Master = The exact same build that will be released today.

    Apple had to start loading a build onto the 3GS ages ago, and that would be the GM build.

    People have some wierd theory that apple will change the build before releasing today - which is highly unlikely. They need to chose a GM, and then thoroughly test it, which takes a while.
     
  10. NStocks macrumors 65816

    Joined:
    Apr 3, 2008
    Location:
    England
    #10
    Thank you !
     
  11. MadGoat macrumors 65816

    MadGoat

    Joined:
    Jul 30, 2007
    Location:
    Canada
    #11
    Gold Master Generally a term that when something is done, you get the gold copy.

    It's used alot in software terms to say that it's gone to the CD presses or, in our case, China to have all the new IPhone 3GS' updated with the new software.
     

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