PB770 Flash BIOS Update

System BIOS
The PB770 uses an IBM XT/AT compatible Phoenix ROM BIOS which is stored in the Intel E28F002BX-T80 2M bit Flash EPROM. Flash EPROMs can be erased and reprogrammed using normal voltages available inside a PC. For this reason, the BIOS can be easily upgraded using the BIOS update program (FMUP.EXE) BIOS identification, which include the revision code, is displayed during POST. Future BIOS upgrades may be available from Packard Bell Electronics, Inc.

In addition to the the Flash EPROM contains Power-On Self Test (POST), BIOS recovery code, video BIOS, and the PCI auto-configuration utility.
 

BIOS Upgrade Utility
The Flash Memory Update Program (FMUP) provides three utilities.
 
1. The BIOS can be updated from a file.
 
2. The current BIOS code can be copied from the Flash EPROM to a disk file as a backup.
 
3. The current BIOS can be compared with a file on the disk.
 

BIOS Upgrade Procedure
The Flash Memory Update Program (FMUP) performs the following steps.
 
1. Boot the system with the BIOS upgrade diskette in the A: drive.
 
2. This message will appear on the screen:

PB770PC release 3.00.d 08-02-95
Phoenix BIOS ver 4.05.2 will be Up/Dn graded.
INTEL PnP BIOS Extensions-Rel 1.1u NJS ID: 99J-123-208
Press CTRL-C to cancel BIOS change.
 
3. Press any key to continue.
 
4. This Menu will appear on the screen:

Performing the following function:
(r)Load initialization file (PLATFORM.BIN)
Backup System BIOS ROM
(r)Load BIOS ROM image file (A50OK002.ROM)
Identify flash memory type
Flash Memory block:
Save block
Restore block
Zero Out block
Erase block
Program block
Verify block
Flash programming complete
 
A status bar will also appear on the bottom of the screen, showing percentage complete.

5. When the procedure is complete a message box will appear:

"Phoenix Flash Status
Flash memory has been successfully programmed
PRESS ANY KEY TO REBOOT THE SYSTEM"
 
6. Remove the diskette from drive A: and press ant key to reboot.
 
7. The process is now complete.
 

BIOS Recovery
It is unlikely that anything will interrupt the flash upgrade process. However, if an interruption occurs that prevents continuing with the upgrade, it is possible the BIOS may be left in an unusable state.

The following steps show how to recover from this situation.
 
1. Locate and move the "Flash Normal/Flash Recovery" jumper block at JP10 from pins 1-2 to pins 2-3.
 
2. Insert the BIOS upgrade diskette and reboot the system. Note that no video is available during this procedure.
 
3. The system beeps once and will start copying the recovery code into the CMOS Flash memory. The system will beep twice as the recovery completes.
 
4. Shut off the system and move the jumper block on JP10 from pins 2-3 back to pins 1-2.
 
5. Leave the BIOS upgrade diskette in the floppy drive, continue with the original upgrade following the procedure described in the preceding BIOS Upgrades section.