Hello, let's be kind and not use foul language my good friend
Well, it's okay to flash a ROM with S-ON. You just need to flash the boot image of the ROM. It's very easy to get out of. As for the flashing of the RUU, it probably bricked because you need S-OFF for the RUU while he had S-ON. In the computer, do you have the HTC drivers installed? Are you using Windows 7 or 8? Are you connecting via USB 2.0 or 3.0? What cable are you using?
-Wizzrah, Android Central Ambassador | Sent from my AT&T HTC One X running CodefireX 4.4.2