Please help to get my phone back!

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http://forums.androidcentral.com – Evo 3D CDMA Sprint I had it flashed from a couple of years ago and wanted to update it. I flash a rom but it hangs on the reboot. Installed the sdk and have adb and fastboot. Have the htc drivers. 1.50 boot and S-ON and unlocked. I connect to pc and run fastboot flash boot boot.img (after I extracted the image from the custom mod's zip) and it hangs on "waiting for device" Please help get my phone back even if to stock rom. I will take ANYTHING that gets my phone back. Thanks! (HowTos)