help needed please

[welshter]

i have a iphones 3gs with baseband 06.15.00 with ios 4.1 i want to upgrade to 4.2.1 can i upgrade if so how without it messing with my baseband thanks

 

[iGaz]

6.15.00 is the ipad baseband. It is higher than the 3GS baseband on 4.2.1 so when you upgrade your baseband will not be affected...