Beagleboard Fail to boot

Hello everyone,

I have some problem with my beagleboard. I'm appreciate if got some of
the expert can help me solve the problem. The scene if like this, My
beagleboard is rev B7, i can not boot the board after i flash the NAND
with new x-loader. The USR0, USR1 and RS232 led are not turn on no
matter how many time i reset it. Did anyone face this problem before?
Or did i screw up the board already? T.T

Yes, you screwed up the board. But, it can be recovered. Restore it to the factory settings and it will work. Then, you can work to figure out the xloader issue.