i got the same problem i was trying to update my dashboard and now my xbox doesn't boot and now when i boot it i see red dot
but xell boot fine i made Freeboot image and i putted it in usb fat32 but xell reloaded doesn't detected it and i'm sure the name is "updflash.bin"
i tried something called raw flash , xell detected the xeneon.elf but i got blank screen after that
can someone help me please ?