Well, you can. At least, you can if you are running a gigabye ep43-ud3l mobo. I posted a thread on here previously about having touble flashing. After trying multilbe methods, I finall took a leap of faith. I grabbed my psp, formatted the mem stick to fat32, loaded the psp with the bios update ONLY, and updated in q-flash. Please note that I do have custom firmware installed on my psp, although I dont think that it makes a lick of difference, seeing as you can use the psp as a "removable disc" regardless. I would be curious to know if this can be done on other mobo makes and models as well. Happy flashing!!!!