Hello everybody .. I'm thinking of upgrading my phone from 1.0.2 to 1.1.3 but i have some questions and i hope you can help .. 1 ) Do i need to virginize first ?? My 1.0.2 iPhone is jailbroken and unlocked to any carrier ... How do i know if i need to virginize ?? 2 ) If i upgrade to 1.1.1 and then to 1.1.3 will i be able to use any sim card i want ?? 3 ) Does the battery get better or worse in 1.1.1/1.1.2/1.1.3 ?? Tnx ..