Custom Firmware iOS 4.2.1 iPHONE 3G release today!
I can succesfully confirm i was able to build a fully working iOS 4.2.1 Custom firmware, that allows you to restore your iPhone 3G iOS 4.2.1 Baseband 06.15.00 without any problems.
I also managed to fix the battery issue problem, which is caused to Baseband update 06.15.00!
After testing for any bugs i will upload and release the Custom Firmware 4.2.1 for iPhone 3G in the night from 1st to 2nd Decembre on this blog.
For iPhone 3Gs pls stay tuned! I am working on it!