Unlocking iPhone 3GS 4.3.2 for T-Mobile

[iphonenoobie]

I bought an iPhone 3GS from someone off craigslist. The iPhone is version 4.3.2 with the modern firmware 05.16.02. It is already jailbroken, but I cannot figure out how to unlock it to use it with T-Mobile. I've been googling "how to videos," and they say I have to upgrade to 06.15.00 with a certain type of jailbreak. How do I do that if my iPhone is already jailbroken? It is getting frustrating and I can't figure out how to do it. Can anyone help me? Thanks.

P.S. Under my settings, I have a Carrier tab. Does this mean I have already unlocked the phone? I do not have a T-Mobile SIM card to test it out with at the moment.

P.S.S. I am an iPhone noob, so please explain it so even a 5 year old can understand it

 

[labman]

My advice learn about it rather then wanting it so simple a caveman can do it tutorial. besides trusting complete strangers including myself. I would want to learn how and why 100% myself. I would also want to learn the risk of the unlock,. 6.15 you will loose your GPS! 6.15 youwill not be able to take it back to Apple for service in or out of warranty. 6.15 you will always need to wait for updated jb that will allow you to cook the firmware. If they stop making the tools you can not update any further. read all the risk before you do it there is no going back. Iclarified.com has very good tutorials there. oh and google works amazingly well. in the time it took you to create a account and post this you could have found the answers. I know this isn't what you want to here I'm a realist.

 

[iphonenoobie]

Yes, I've done the research, and I am aware of the risks. But is there another way to unlock an iPhone running 4.3.2 without converting to 6.15? If there is, I would like to know. My problem lies in having an already jailbroke iPhone that is 05.16.02 without the 6.15 that's only obtainable through jailbreaking with the ultrasn0w, I believe. If there's a way to get the 6.15 with my current jailbreak, please let me know. Thanks.

 

[labman]

only option you have is Ipad baseband 6.15 if you read the risk and want to take them the tutorials are out there.

http://www.iclarified.com/jailbreak/

http://www.iclarified.com/unlock/

 

[iphonenoobie]

I see. Okay, do I just override the jailbreak with another jailbreak, in order to get it to 6.15, or is there a way to delete the initial jailbreak, and then re-jailbreak it again? Thanks again.

EDIT:
I have tried to do the 4.3.2 jailbreak through
http://www.redmondpie.com/jailbreak-ios-4.3.2-untethered-on-windows-using-sn0wbreeze-2.6-tutorial/
since the iClarified version of the jailbreak did not work. I'm not sure how to convert 5.16.02 to 6.15. Any help? Thank you.

 

[eastercat]

There's a 6.15 tutorial on redmondpie, if you look.

FYI, first run tiny umbrella and save your blobs.

 

[iphonenoobie]

But those are for iPhones that aren't already jailbroken and running version 4.3.2 and firmware 05.16.02. Almost all the posts are more than a few months ago, and they're telling me to UPgrade to 4.3.2. If the iPhone wasn't jailbroken, then it'd be like the tutorial. I tried to follow through with the tutorial from redmondpie anyways, but after I got to the last step, where you hold Shift and then click the Restore button on iTunes, it said it wasn't possible. I've tried the procedure twice, yielding the same result. I've decided to save the hassle and resell this phone, and buy one that's already unlocked... I wasted 4 hours of my life researching, experimenting, and failing But thanks for your contribution and your time.