how to upgrade iphone 3gs to ios5 with ipad baseband

[iPhoned00d]

hello, I bought an iphone 3gs that was bricked and I know it had the 6.15 ipad baseband, the person I bought it from restored it and failed. I tried restoring it with a custom 4.2.1 firmware, and iTunes wouldnt let me. Can anybody share a custom ios5 firmware download to get my iphone 3gs working on ios5 with 6.15 baseband?

 

[brand]

I don't think you can ask for that at MacRumors without getting in trouble with a moderator since you are asking for copyrighted material that has been modified.

 

[saving107]

Try google.com, they have all kinds of information there.