PB520R BIOS Upgrade

Caution Only authorized service personnel should upgrade the system. Anyone who wants to upgrade the system themselves should know about the dangers of ESD (Electro-Static Discharge) and the necessary precautions. Unknowingly zapping the components of the computer will void the warranty.

Specifications
The BIOS in the PB520 is contained in Flash EEPROM, and it can be updated via software. If the Flash BIOS is corrupted during an update, it is possible to recover it.

BIOS Update
To update the BIOS, perform the following steps.

  1. Insert the update diskette into drive A: and reboot the system.
  2. Press enter when the screen below appears.

  3. When the FLASH MEMORY UPDATE UTILITY program loads, select Update Flash Memory Area from a file then press <Enter>, as shown below.

  4. Select file name "1009bc0r.bi0" from list as shown below then press <Enter>.

  5. Select "Exit Program" then press <Enter>

BIOS Recovery
To recover from a corrupted BIOS, perform the following steps.

  1. Turn off the system.
  2. Remove the system's case and move the jumper block on J17 from pins 2-3 to pins 1-2.
  3. Place the update diskette in drive A: and turn on the system.
  4. There will be no video display during the BIOS recovery, this is due to the small amount of code available in the non-erasable boot block area.
  5. After the system boots, it will beep once and the floppy drive light should light up. The system is copying the recovery code into the Flash EEPROM.
  6. Just before the recovery completes, the system will beep twice. Once this occurs, watch the floppy drive light. When the light goes off, turn off the system.
  7. Move the jumper block on J17 from pins 1-2 back to pins 2-3.
  8. Turn the system on and repeat the steps for updating the BIOS.