Hi, I'm new to the forum so excuse my questions.

First - I purchased a "supposed" jailbroken and unlocked iPhone with the above mentioned specs. Being new to jailbreaking/unlocking I didn't realize that it wasn't truly unlocked.

After some reading (which I probably should have researched more thoroughly earlier) I finally figured that the person probably jailbroke the phone but didn't change the baseband to the iPad 6.15.00 so it couldn't be unlocked with ultrasnow.

Now here is the question: Can I rejailbreak/and unlock the iPhone with no problems? Are there any instructions on how to "redo" what was previously done but the right way so that I can use the phone on T-mobile? (I do have redsn0w and the restore file to be patched already downloaded).

Or do I have to or should I just wait until there is a ultrasnow that will unlock baseband 05.15.04?

Can someone lead me down the right path.

Thanks for your help in advance.