iPhone Unlock Help

I have been recently trying to unlock my iPhone 3g 4.2.1 baseband 5.15, which is of course one of two (5.15 & 5.14) that are impossible to unlock. One solution is to upgrade to 6.15 baseband, which is a iPad baseband, but after hours of research, It is quite buggy and not really worth it. If your in the same position as me, I would suggest following the developer's blogs and twitter accounts to get the info as to when a solution for this will be released (it is speculated to be released after the new iOS, 4.3, is released.). I will post any info that I find.