I'm currently running 4.3.1(8g4) on an iphone 3gs and I want to downgrade my baseband (from 06.15.00 to lower) and I also want to upgrade my firmware to 5.1.1. But this is my first time so I really need help on how, what is needed for these two things? ( if there are steps by steps or instructions with pictures or video would be really helpful)
and my 3gs is made on the 13th week of 2011. (113)
Thank You,
and my 3gs is made on the 13th week of 2011. (113)Thank You,