I installed my DemoN that just came in the mail, read the nand of my 360 twice and them dumps were the same. I then tried to write the image to the DemoN's nand so I could test the functionality before installing my Coolrunner. Jrunner came up with the error "manufacturer for code AF not found." I thought I might have soldered wrong so I tried to write the image to the 360's nand. It worked but now whenever I read the 360's nand the images aren't the same, and my Xbox won't turn on. I think I f**ked up and wrote a bad image onto my 360. I only have one copy of the original dump. Is there anyway to know if its good or not? Whenever I read the 360's nand now, the image doesn't match up with the original, even when I try to rewrite the original. Please help!