3g already jailbroken 2.0.1, thinking about quickpwn for mac

[domerdel]

I want to upgrade my firmware from 2.0.1 on my mac, to 2.0.2. Will QuickPwn for Mac erase my existing data or does it apply the new firmware without harming my data?

I'm looking to save time without the whole restore process, but also not looking forward to reloading some custom data that iTunes doesn't back up.

Edit: Look like i can't do anything with a previously pwned phone with QuickPwn. QuickPwn wants a fresh firmware to read. So much for that idea. looks like i have a long road ahead of me backing crap up that i don't want to do. *sigh* someday