hi I think i may have done a big mistake. I have a jasper board with 512mb nand. I have made 3 correct dumps and then i installed xell.... and then it dident boot. i just have rrod and no blue screen. so I started googling and i found out with 360 flash tool that my cb was 6750 which means that it isnt Jtagable. can i somehow reflash my nand to my dumps i had before? and if so can you post a link to a guide or something cause I dont wanna fuck up anny more.
plz help me

Yes you can, but you'll need to give us more info. I.E. What command did you use to dump them? ...are they complete dumps, or just the first few MB?

I used Jtag tool and did a complete dumps so I didnt use anny commands.

get nandpro2.0b
open a cmd prompt to where ever you put nandpro, move your full dump into that folder, then type
nandpro usb: -w512 "nameofthebackup.bin"
if you used lpt replace usb with it, and no quotes.