Ok, that's fair enough. I also tried the HTCDev method and did not have any success with that either. I believe it mentioned that it supported phones from 9/2011 on. I obtained my phone in May of 2011. Are you aware of people doing this on EVO 4G phones older than September of 2011? I'm going to call it a night shortly and try again tomorrow. I can certainly give better details then, but I tried I registered on HTCDev's site, confirmed the email, clicked on bootloader section and selected the last option which was "All other supported models" and the screen grayed out like it was doing something, but never completed. You could still see the screen as it was in some half intensity type of mode and you could exit out so the phone did not hang.