I have a Jasper16MB board with an exploitable CB(6723) and 360 nand flasher . I can dump the nand.bin well. When I install xell.bin with nandpro .( nandpro usb: -w16mb xell.bin) My xbox360 shows e79 error. I unable to get blue screen for cpu key. When I install xell.bin with JTAG TOOL my xbox 360 not power ON. Please help me how to get that blue screen for cpu key. When I install original nand.bin console is fine without any errors Because I lost my DVD drive key please reply me asap thanqu