1) I already unlocked and jailbroke my iPhone 4gb using winpwn (currently run 2.0) Do I need to follow all the steps since my phone is already unlocked as I just want to update the firmware (if I don't have to follow all the steps, then how do I do it)?

2) I see people posting about changing the "root partition" to 1000, how would I do this?

Thnak you!