There is a revised model of the GSM iPhone 4?

Discussion in 'iPhone' started by chrismarle, Feb 11, 2013.

  1. macrumors 6502

    Joined:
    Jun 18, 2011
    Location:
    Canada
    #1
    Hi guys,

    I was browsing through the iOS Dev Center and I noticed that there is a firmware for a revised model of the GSM iPhone 4. Anyone has a clue of what it is or where it came from? I actually never heard of it before I looked in the Dev Center.
     

    Attached Files:

  2. macrumors 6502a

    ConCat

    Joined:
    Jul 27, 2012
    Location:
    In an ethereal plane of existence.
  3. macrumors Nehalem

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #3
    Good catch.
    But would they make a special firmware version just for the same version iphone 4 with less storage?
     
  4. macrumors 65816

    Joined:
    Jul 29, 2012
    Location:
    Singapore
    #4
    There's also an iPad 2 Wifi (Rev A). How do you explain that?
     
  5. thread starter macrumors 6502

    Joined:
    Jun 18, 2011
    Location:
    Canada
    #5
    But we never saw an iPhone 3GS revision model when they launched the 8Gb one at the iPhone 4 announcement.

    I find that weird too for the reason I just said.

    The revision model of the iPad 2 had a new 32nm A5 chip instead of the 40nm chip found in the "first" iPad 2.
     
  6. macrumors member

    Joined:
    Apr 28, 2011
    #6
    Upon searching the Internet for an answer everyone seems to suggest the 8GB 4 gets this firmware. However like you've suggested that typically does not require different firmware alone. There might be a slight hardware difference too (besides memory).
     
  7. macrumors 6502a

    bohbot16

    Joined:
    Mar 22, 2009
    #7
    Apple may have done a die shrink on the iPhone 4's A4 processor to lower cost. This would follow the same method used for the iPad 2 WiFi Rev A, when the A5 went from a 45nm process to a 32nm process. These shrinks make it so you can manufacture more chips at a time (more per wafer). Apple was able to lower the price of the iPad 2 by $100 as a result.

    I'm wondering if this is related to the recent rumors of a cheaper iPhone. Good find!
     
  8. macrumors Nehalem

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #8
    Yep, that would make sense.
    Maybe they changed something on the hardware besides just half the amount of storage.
     
  9. macrumors 6502a

    bohbot16

    Joined:
    Mar 22, 2009
    #9
    Yeah, I suspect it's a 45nm->32nm die shrink of the A4.
     
  10. macrumors Nehalem

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #10
    True, that would explain the new firmware built.
     

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