2 questions...

1. - I have a 3g running a pwn'd 2.0 firmware, but I'm really wanting to upgrade to a pwn'd 2.1 firmware for the enhanced gps features among other things. i know there are several tutorials on how to upgrade to 2.1, but they don't specifically say if they are for a pwn'd phone or a regular phone. I'm sure this is a very stupid question, but i'd appreciate if someone could clarify how i need to go about updating the firmware with my current configuration without bricking my phone. thanks

2. - if anyone knows of a tutorial on what i need to do before upgrading (such as backing up contacts and especially apps) i'd really appreciate a link to it. i ran across one a few weeks ago, but i can't find it now. thanks again.