the boot from CD make virtual floppy (A Drive) and i think that the virtual floppy is on "write protected" mode maybe if you will make a tiny little partition (2GB max) with file system fat32 and copy the flash rom file and the flash exe file and after this you can boot from cd and go to your fat32 drive (default is C) and try to do flash p.s. i thinking on this option because there is no "protected mode" in fat32 on pure dos and maybe the flash program need to write a temp file for the flash procedure
OH! - Never tried to unhide anything in the BIOS since it cannot be done. Updated SLIC if you are interested or for others to use. Thanks