Yes i know it works that way.
But i have a an xbox from a customer who made a bad flash.
So i have no other choice than to use x2bm
I have tried to flash it with an unedited bios using x2bm and after that i wanted to reflash it using flashx and an edited bios but it doesn't work.
flashx says it finished flashing but after rebooting the old bios is still there.