I just got an iPhone from another guy, researched several forums and found out that i should first virginize it (since it's jailbroken by that guy, but not unlocked) before upgrade it to version 1.1.1 and then unlock.

But something confused me.
In phone's about section it says that the version is 1.0.2(1C28) which is OK.
However for Modem Firmware version it says 04.01.13_G. But what I learned from other forums is that version 1.0.2 should have modem firmware version 03.14.08_G.
Should I continue to virginize or do I have to downgrade the modem firmware too?