I tired to "open my phone" (root) last week, and it failed. I'm on Andriod 2.2 with software 3.30.651.3. I tried to do the the unevoked method, but I guess it doesn't work for my phone yet? Im new to this forum, and I have rooted a wii and psp, so this seemed easier, or so I thought. Anyways, before i did the unevoked method I had to install the "Android Bootloader Interface" I did that but since the root failed, does it matter if I have the Andriod Bootloader Interface on my EVO 4G? Should I switch back to Andriod 1.0? Can I switch back? 
I hope I made sense, and thank you in advance!

I hope I made sense, and thank you in advance!