can any iphone 4 with 4.0.2 be unlocked?

Discussion in 'Jailbreaks and iOS Hacks' started by ansabakhan, Oct 13, 2010.

  1. ansabakhan macrumors 65816

    ansabakhan

    Joined:
    Mar 3, 2010
    #1
    i don't understand baseband very well .. i am getting my iphone 4 with 4.0.2 , i was wondering if all iphone 4s with 4.0.2 can be unlocked as of right now? .. or are there different basebands where some can be unlocked and some are still waiting?
     
  2. idevSteve macrumors member

    Joined:
    Dec 17, 2009
    Location:
    Florida
    #2
    Yes. In order to unlock an iPhone you have to jailbreak first, so you should preserve your baseband(01.59.00) using TinyUmbrella. Jailbreak with limera1n. Then you can unlock using ultrasn0w.
     
  3. ansabakhan thread starter macrumors 65816

    ansabakhan

    Joined:
    Mar 3, 2010
    #3
    great! thanks .. so that means all iphone 4;s with 4.0.2 comes with 01.59.00 ? thanks
     
  4. maturola macrumors 68040

    maturola

    Joined:
    Oct 29, 2007
    Location:
    Atlanta, GA
    #4
    Baseband: Based band is the name given to the modem (radio) firmware, this is the code that control the hardware that allow the phone to communicate with the network, it hold the network stack (think about the language that the Network towers speaks).

    Source: Jailbreaking FAQ and commonly use terminology, + Guides

    Just as you update driver on your computer for your Printer, or your mouse or any device, the Firmware on the modem of the phone need to be update from time to time (to address bug fixes, to increase performance, to add new features, etc).

    Yes there are several version of the baseband for each phone, Unlocking the baseband is a bit harder to do than jailbreaking (since actually jailbreaking [root access] is required in order to even start working on an baseband unlock). For this reason usually the most recent baseband is no unlock. Older baseband are unlock since hackers had lot more time to work on it.

    To answer more of your question, you need to tell us what baseband version you are running, even when you are on 4.0.2, if you (or previous owner of the iDevice) updated to for example 4.1 at any point and them downgrade back to 4.0.1 you will have the newer baseband.
     
  5. ansabakhan thread starter macrumors 65816

    ansabakhan

    Joined:
    Mar 3, 2010
    #5
    Thank you for detailed answer, so when i get my iphone 4 on 4.0.2 i should be on a unlockable baseband ...
     
  6. maturola macrumors 68040

    maturola

    Joined:
    Oct 29, 2007
    Location:
    Atlanta, GA
    #6
    AS i said, all depend where are you "getting" it from.....

    From Apple? Doubt you will get a phone with 4.0.2 still, but if you are lucky them yes, factory 4.0.2 will come with an unlockable baseband

    From ebay, craiglist? no way to know, someone could have update to 4.1 (which update the baseband to a 02.xx version that is NOT currently unlockable) and them you will be stuck, or maybe it have always had 4.0.2 and you may be fine.
     
  7. ansabakhan thread starter macrumors 65816

    ansabakhan

    Joined:
    Mar 3, 2010
    #7
    i am getting it from some one who got iphone 4 on 4.0.2 from apple i month back and never upgraded .
     
  8. idevSteve macrumors member

    Joined:
    Dec 17, 2009
    Location:
    Florida
    #8
    Should be fine if they state it was never upgraded. It sounds suspicious that someone would want to get rid of a brand new iPhone. Make sure you check the baseband before you purchase to ensure it can be unlocked.

    Settings>General>About --->Modem Firmware
     
  9. jelder macrumors newbie

    Joined:
    Oct 13, 2010
    #9
    quick question

    :confused: Hey i have an iphone 4 thats on 4.0.2 and modem firmware 01.59.00. I installed ultrasn0w successfully does that mean its unlocked? i dont really want to cut my sim card to test it and it ends up not working.
     
  10. MikePA macrumors 68020

    MikePA

    Joined:
    Aug 17, 2008
    #10
    Yes.
     
  11. jelder macrumors newbie

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    Oct 13, 2010
    #11
    ok cool, so i should cut my sim ant try it out? would you do it?
     
  12. MikePA macrumors 68020

    MikePA

    Joined:
    Aug 17, 2008
    #12
    Yes. Yes.
     
  13. murdercitydevil macrumors 68000

    murdercitydevil

    Joined:
    Feb 23, 2010
    Location:
    california
    #13
    Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_0 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8A293 Safari/6531.22.7)

    I got my iPhone replaced on the 11th and it came with 4.0.2. I was able to update to 4.1 with TU and preserve my baseband
     
  14. ansabakhan thread starter macrumors 65816

    ansabakhan

    Joined:
    Mar 3, 2010
    #14
    there are many people who get iphone 4 as their upgrade on AT&T accounts , just to sell it and make few $$$ , and keep using their old phones
     
  15. jelder macrumors newbie

    Joined:
    Oct 13, 2010
    #15
    thanks!!!! i cut it and it works lol i only paid 250 for this phone because the person thought it couldnt be unlocked

    i win!!!:p
     
  16. ansabakhan thread starter macrumors 65816

    ansabakhan

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    Mar 3, 2010
    #16
    $250 ????
     
  17. jelder macrumors newbie

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    Oct 13, 2010
    #17
    yea its a new 16 gig iphone 4. they found it and they couldnt use it so they sold it for $250
     
  18. MikePA macrumors 68020

    MikePA

    Joined:
    Aug 17, 2008
    #18
    They 'found it'???? Yeah, right. :rolleyes:

    I bet you bought a stolen phone.
     
  19. ansabakhan thread starter macrumors 65816

    ansabakhan

    Joined:
    Mar 3, 2010
    #19
    who's 'they' ?
     
  20. jelder macrumors newbie

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    Oct 13, 2010
    #20
    idk people do sit things down at random places and forget about them when they leave idk
     
  21. ansabakhan thread starter macrumors 65816

    ansabakhan

    Joined:
    Mar 3, 2010
    #21
    idk?
     
  22. maturola macrumors 68040

    maturola

    Joined:
    Oct 29, 2007
    Location:
    Atlanta, GA
    #22
    I Don't Know
     
  23. ansabakhan thread starter macrumors 65816

    ansabakhan

    Joined:
    Mar 3, 2010
    #23
    ohh i see !
     

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