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Am I Unlocked?

pittpanthersfan

pittpanthersfan

macrumors 6502
Original poster
Jun 7, 2009
362
51
I jailbroke and unlocked(?) my 3G. Not sure if I did it right though. Here are the steps that I went through:

1. Before I jailbroke, I upgraded to iOS 4. I then jailbroke with redsn0w and downloaded the ultrasn0w package from within Cydia, thereby unlocking it I believe.

2. iOS 4 was rediculously sluggish and a battery drain, so I completely wiped the phone and downgraded to 3.1.2.

3. I then jailbroke using redsn0w and downloaded blacksn0w from within Cydia.

4. Today I went to a T-Mobile store just to determine whether I had unlocked successfully. I popped in one of their test SIMs. On the first boot, it showed no bars. On the second boot, it showed "Searching..." for a very long time. On the third boot, it showed no bars again. I switched airplane mode off and back on and it then showed "Invalid SIM card."

Not once did it display the carrier, "T-Mobile." The T-Mobile guy seemed to think that because it attempted a search, that that was a good sign. I'm not sure if there's something wrong with the test SIM, or my unlock or what.

Specs:

iPhone 3G
OS 3.1.2 (7D11)
Modem Firmware 05.13.04
blacksn0w RC1

Should I remove blacksn0w and try ultrasn0w again? :confused:
 
When you upgraded to 4.0 your Baseband updated and blacksn0w couldnt unlock it anymore

so now only ultrasn0w will work

Hope that helped ;)


EDIT: Even when downgrading back to 3.1.2 your baseband stayed the same
 
Enter DFU mode and restore as new on iOS 4.0. Jailbreak with redsn0w, download ultrasn0w again. Done!

I did this on 3 iPhone 3G's that I sold and they all worked better when restored as new. Multitasking, background wallpaper etc... all worked fine.
 
@Leet Apple: Much thanks for all the info! :cool: I'll give ultrasn0w a try on 3.1.2.

@Loves2spoon: I'm not really that motivated to upgrade to iOS 4 again by any of the 3G "features." If anything iOS 4-exclusive comes out and I do decide to upgrade, I 'll be sure to use your method.

Thanks, guys.
 
I removed blacksn0w and installed ultrasn0w which left me with no service. Does it not like that I have baseband 05.13.04 on 3.1.2?
 
Applejuiced said:
Restore back to 3.1.2 and then jb again and this time install ultraslow to unlock.
Not blacksnow.
Make sure you have 3G turned off if u gonna use a Tmobile sim.
Click to expand...

I'm not sure what you mean. This is essentially what I already did. :(
 
I reinstalled ultrasn0w and, for whatever reason, I kept my signal this time. I'll try to head back a T-Mobile store to test out one of their SIMs again. If it still isn't working, I'll just bite the bullet and upgrade to iOS 4 + ultrasn0w again.
 
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