The current version is 0403 (15/08/2011), so it's needs to be updated to 0603 (18/10/2011). When I put the rom file on a USB flash disk, start EZFlash and select the new rom I get the following message:
"ROM ID in the file is incompatible with existing BIOS" ..
Could someone explain to me why I can't flash/update the BIOS?
When I try version 0411 (06/10/2011) I get the same error
The USB flashdrive is a FAT32 type and all the roms are extracted (placed as .ROM files on the drive).
Thank in advance
EDIT: I've renamed the ROM file to a max of 8 characters but this still gives me the same message in EZFlash.
ASUSTech responded with instructions within about 6 hours. The proper BIOS ROM depends upon the serial number it seems. My M5A78L-M LX Plus needed the 0402 BIOS, nothing later would work. The M5A78L-M LX required the 0602 BIOS ROM in spite of being earlier manufacture than the LX Plus, go figure. Both boards flashed and now work fine.
I suggest that you file a Technical Inquiry with ASUSTek support, providing the serial number of your board.