How to know if iPhone can be unlocked?

Discussion in 'Jailbreaks and iOS Hacks' started by GFLPraxis, May 4, 2010.

  1. GFLPraxis macrumors 604

    GFLPraxis

    Joined:
    Mar 17, 2004
    #1
    I've been tasked with finding a replacement to a family member's broken iPhone that I can unlock to T-Mobile.

    I found a guy on Craigslist with a "perfect condition" iPhone 3G. He said he got it two months ago.

    Is there a way to determine if it has the un-unlockable 05.12.01 firmware without taking it home and jailbreaking it first?

    Thanks!
     
  2. -aggie- macrumors P6

    -aggie-

    Joined:
    Jun 19, 2009
    Location:
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    #2
    Just go to settings>general>about and look at the modem firmware.

    Don't you mean 5.11.07?
     
  3. GFLPraxis thread starter macrumors 604

    GFLPraxis

    Joined:
    Mar 17, 2004
    #3
    No, the first iPhone I got was on 05.12.01, and I couldn't unlock :( Luckily, I got it through a refurb outlet so I'm returning it.

    Is 05.11.07 not unlockable as well? Or does blacksn0w cover it?
     
  4. -aggie- macrumors P6

    -aggie-

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    #4
    I missed you wrote un-un. :)

    5.11.07 is unlockable.
     
  5. Reppindaburghh macrumors newbie

    Joined:
    May 3, 2010
    #5
    All 3G's are unlockable. Only ones that are questionable are 3GS. If you can get a 3G it is guarenteed to be unlockable.
     
  6. Nermal Moderator

    Nermal

    Staff Member

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    New Zealand
    #6
    Do you have a source for that? I don't believe that it's correct.
     
  7. GFLPraxis thread starter macrumors 604

    GFLPraxis

    Joined:
    Mar 17, 2004
    #7
    This is not true. I'm holding in my hand right now an 8 GB, refurbished iPhone 3G from NewEgg with the 05.12.01 firmware that cannot be unlocked. >_<

    I jailbroke it though.
     
  8. -aggie- macrumors P6

    -aggie-

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    #8
    Baloney. If you're on 5.12.01 then you can't currently unlock (due to going to 3.1.3). Do some reading on here before you post, okay?
     
  9. dhlizard macrumors G4

    dhlizard

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    Mar 16, 2009
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    #9
    Any 3G or 3GS on baseband 5.12.xx or higher cannot currently be unlocked.

    Likely this will change in mid June.
     
  10. ulbador macrumors 68000

    ulbador

    Joined:
    Feb 11, 2010
    #10
    You CAN unlock on a 3g 5.12.01, but only if you if are one of the lucky ones with the right bootloader (5.08). Then you can just use FuzzyBand to downgrade to an unlockable baseband


    http://www.jailbreakmatrix.com/
     
  11. Applejuiced macrumors Westmere

    Applejuiced

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    Apr 16, 2008
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    #11
    Very very slim chances if the iphone 3G has the very first bootloader and bought when it first came out a few years ago.
     
  12. ulbador macrumors 68000

    ulbador

    Joined:
    Feb 11, 2010
    #12
    Right. About the easiest way to test this is to just download FuzzyBand via Cydia and run it. If it works, more power to you. But Applejuiced is right, pretty slim chance
     
  13. Applejuiced macrumors Westmere

    Applejuiced

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    #13
    Yes, definetelly worth a try though.
    An iphone 3G with the bootloader (5.08) will always be able to downgrade its baseband to 04.26.08 with fuzzyband and then unlock it with Ultrasnow. Its like having a carrier unlock :D
     
  14. iMrNiceGuy0023 macrumors 68000

    Joined:
    Jun 5, 2009
    #14
    I have a 3GS 3.1.2 on 04.26.08....is that unlockable??
     
  15. Applejuiced macrumors Westmere

    Applejuiced

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    #15
    Yes, with ultrasnow.
     
  16. LivingLarge macrumors member

    Joined:
    Apr 20, 2010
    #16
    Earlier today, I successfully Unlocked a 3G 3.1.3, 5.12.01.

    I have the 5.08 bootloader, which was/is the key factor. First of all i ran Spirit jailbreak and the ran Fuzzyband as previously mentioned and downgraded the baseband to 4.26.08, then used Ultrasn0w for the unlock.

    Worked like a charm :D I almost forgot how nice it was to have a j/b'n and unlocked phone.
     

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