Hi Just a Quick Questions

Im good with the 2G Iphone unlocking etc but since i sold them in may i totally went off the Iphone way. Getting back into it now, quick question

In the iphone 3g, i understand lets say firmware 2.0 = 1.45 baseband


If i update to 2.2 using pwnage tool creating the custom ipsw firmware file, will the baseband remain at 1.45 or update to new one? As i really want to keep it at 1.45