help

[tlpalmer01]

I rooted my sprint hero yesterday and flashed the fresh 2.0c...i liked it but it had some bugs so i wanted to go back to stock so i flashed the sprint ruu 1.56 and it goes to almost being done then says that it cant because the file is damaged...my phone when i power it on i just get a black screen, i cant put it in bootload, when i hook up to usb it goes to htc screen then it will go to a screen where it looks like i can type something it the box has ruu in it like i can finish typing something but my buttons dont work..did i brick my phone does anyone know.....god i feel like i did and if i did i am very screwed....