Default [Q] Default htc evo 4g soft bricked

Hi guys, my htc evo 4g soft bricked...i can get into the bootloader.
i have not installed any custom rom or recovery yet.

details are:
supersoinic s-off
hboot 2.16

i get an error "FAILED (remote: not allowed)" when i try to flash recovery image through fastboot.
I have googled all day to get it done myself. Everyone has redirected me to XDA.

Hope XDA can help me restore my EVO 4G sprint
Can any of you guys help me out. I have no prob even if the data is erased.