I am running pwned 2.0.2, jailbroken and unlocked. In my previous pwnings, I have always used Pwnage and restore my custom firmware. However, I am considering another option to go to 2.1.
First upgrade to stock 2.1 through iTunes 8. Then Quickpwning 2.1. By doing so I would avoid restoring.
My only doubt is whether I keep the unlock by upgrading to stock 2.1 through iTunes. I know that some people said they did it, but shouldn't I lose the unlock if the baseband gets upgraded when updating to 2.1?