I just bought a G1 (rooted running 2.2 froyo) but someone else's gmail is set as the primary email so now i cant log into the marketplace. I googled ways to reset the primary email but id have to do the factory reset. If i do this wont it mean that my 2.2 firmware would go away (i'm new to android so i dont know how to root it again and id rather not mess around with it). What options do i have? Any help would be great.