HTC EVO 4G :: How To Flash Custom ROM / If Are Rooted With Unrevoked 3

I havent seen a thread on this yet, and im sure this will help those of you wanting to flash a custom ROM (even a rooted version of Froyo!)after rooting your phone with unrevoked 3.1

Step ONE:
The first thing to do is to download and install Titanium Backup from the market, and backup all of your apps and user data.Once this is done, shut your phone off.

STEP TWO:
Press and hold your volume up button. then press and release your power key while continuing to hold your volume up button.

Your phone will boot into a white background menu that has green text at the top, followed by FASTBOOT highlighted in red, followed by text in orange, then 4 options. You can release your volume up key once this menu is up.