I have an ASUS A7N8X-E Deluxe motherboard (BIOS 1013) which has a Silicon Image 3112 SATA controller (BIOS 4.2.47) and a Plextor PX-755SA DVD burner (Firmware 1.07). I cannot boot to my DVD drive during startup. The controller recognizes the DVD drive during POST and Windows XP SP2 recognizes it as well. I have changed the boot sequence in BIOS to CDROM, RAID with CDROM, SCSI with CDROM, and boot from other device. I have also tried updating the BIOS on the SATA controller but the update utility does not recognize my chip. I have used updflash.exe 3.35 with BIOS r4283.bin and b4283.bin (using a MS-DOS start-up disk and files from Silicon Image website). When I try to flash the controller BIOS I get a message, “Nothing matched, chip not supported.” I have two questions.

1. How do I boot from my DVD drive?
2. How do I flash my SATA controller (if needed)?

Thank you.