ok so i followed martin c guide i flashed my ecc file and booted into xell got my cpu keys. i then went ahead and build my image using fibers guide all went well. i put my image onto usb and restated xbox. it start flashing the image but kept say bad block the same errors i had when i read the nand , and now the xbox wont turn on. it makes a bleep noise no lights nothing. tryed to connect nand x to restore to orignal but wont fine nand ?