Is a 3GS with iOS 3.1.3, baseband 05.12.01 unlockable with good GPS?

Discussion in 'iPhone Unlock' started by Little-Acorn, Mar 15, 2012.

  1. Little-Acorn

    Little-Acorn Member
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    I just picked up a new (old) iPhone 3GS 32GB for my wife. It has iOS 3.1.3 and baseband 05.12.01. I hope to jailbreak it and unlock it for use with T-Mobile. The hard part is, I hope to do it in such a way that the GPS chip still works.

    My other 3GS (for me) was JB/unlocked with baseband 06.15.00 (the iPod baseband), which I understand often disables the GPS chip in the phone. I can believe it, since that phone has no clue where it is when I shut off WiFi (these 3GS's have "Assisted GPS" where they get some of their location data from WiFi as well as GPS).

    I just tried this new 3GS (not yet JB'ed or unlocked), and its location services run beautifully, gave me fixes as good as my old Garmin Emap, which I often used in Geocaching. (My unlocked 3GS, even with WiFi turned on, maybe gets me within a few blocks, and gets very lost on freeways.)

    I want to unlock this new 3GS, but want to be very careful doing it. Can this be done with iOS 3.1.3?

    Is it first possible to upgrade the iOS to 5.0.1, while preserving the baseband of 05.12.01? Or should I just leave the iOS as is, and jailbreak it? Above all, I want to preserve the baseband.

    What is a good tool for this upgrading and/or jailbreaking? I've heard good things about Redsn0w, but have never tried it. Is Redsn0w capable of upgrading the iOS to 5.0.1 WITHOUT changing the baseband of 05.12.01?

    Thanks all! :D
     
  2. Little-Acorn

    Little-Acorn Member
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    Never mind.

    I took the phone to the local wireless pirate, and he jailbroke it and unlocked it. Now it still has iOS 3.1.3, baseband 05.12.01, the GPS locks in on me and follows me every step (even on freeways going fast where it cannot reach any WiFi hotspots), and it works fine with T-Mobile.

    Case closed. :D
     

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