An interrupted or failed BIOS update, might result in a corrupted BIOS, which could cause the system to fail POST and not boot. To resolve this, you must recover the BIOS by performing the following BIOS recovery procedure. This procedure will be added to the Sun Ultra 27 Workstation Service Manual.
Copy the file /BIOS/RELEASED_BIOS/xxx/xxx.ROM from the Tools and Drivers DVD to the root directory of a USB flash drive.
where xxx is the BIOS version number (for example, 102 or 103).
On the flash drive, rename the file xxx.ROM to AMIBOOT.ROM.
Insert USB flash drive into an available USB port on the workstation.
Power on the workstation, press and hold the Ctrl + Home keys, and watch the USB flash drive’s access light.
When the flash drive’s access light starts to blink, release the keys.
Follow the onscreen instructions to recover system BIOS.