Thanks for the help ok i have re flash once the xbr.bin without no badblocks once i turn on the xbox it powers up but i don't get no video or NO Error.......
i Have flash like 5 times now and flashed back to the back up nand dump1 and work fine but no luck with the xbr.bin?



?
The CB is 6723 on a jasper 512
im also using a USB
i really don't think it have to do with the XBR_JasperBB_8955_3

? should i try feeboot ? if so what is the file called and where do i get it sorry but i have nerve used feeboot??

Did you erase the NAND at first? All of it? BB's tend to have issues regarding the filesystem of the NAND (the "MU" part of it) and the user sometimes needs to erase the whole NAND, write XBR, and never use the MU again, otherwise it will eventually get screwed up again, won't boot.
If the original dump works, the JTAG will work, too, if done properly. Do a complete erase of your NAND, download XBR again, make sure you have a 512MB NAND (I have seen people get it wrong regardless of their experience) and try again. You're bound to win.
Freeboot is a completely different story, needs to be compiled and this tool can't do much about it (yet?).