M550
M550 Mainboard:
Precaution your system will not startup due to fault procedure to update the FLASH ROM BIOS. We don't suggest you doing directly down load the update BIOS to your system's FLASH ROM. The better way is saved the new file in your Hard Disk or Floppy Disk, and do duplicate into a new EPROM or FLASH ROM using EPROM WRITER (i.e. EPROM PROGRAMMER), then, you are shutdown your system and put a new BIOS to replace the old one, but you must keep the old BIOS until the new BIOS running in perfect, perhaps, the mistakes will be causing your system not started-up again.
Caution: We don't provide EPROM or FLASH ROM or EPROM WRITER (i.e. EPROM PROGRAMMER). Those parts are easy to find in most component shop.
- amifl632.zip:
- AMI Flash Utility for upgrade of flash-BIOS
- 5501117s.bin checksum: * 0985 * (The new BIOS file)
- BIOS code: AMI BIOS
- BIOS code: Releas 11/17/1997 S
- BIOS Date:11/17/1997 S. FOR M550 PnP (for Block size=4K flash ROM, e.g. H.T. )
- Board Description:TX 586 chipset
- BIOS Features:To support AMD K5 PR166 & K6, Cyrix M2 CPU, IDE LBA mode(>512MB),IDE block
mode,AUTO banking DRAM size and addition CYRIX CPU title.
- 5500820s.bin checksum: * 2A94 *
- BIOS code: AMI BIOS
- BIOS code: Releas 08/20/1997 S
- BIOS code: 51-0819-001437-00111111-071595-I430TX-001_10_TX-H
- BIOS Date:08/20/1997 S. FOR M550 PnP (for Block size=4K flash ROM, e.g. H.T. )
- Board Description:TX 586 chipset
- BIOS Features:To support AMD K5 PR166 & K6, Cyrix M2 CPU, IDE LBA mode(>512MB),IDE block
mode,AUTO banking DRAM size and addition CYRIX CPU title.
Flash ROM Voltage and Block Size
| Brand |
Voltage |
Block Size |
BIOS file |
| intel 28F001 BX-T120 |
12 V |
4 K |
(xxxxxxx)s.bin |
| MX28F1000PL |
12 V |
16 K |
(xxxxxxx)l.bin |
| MX28F1000PC |
12 V |
16 K |
(xxxxxxx)l.bin |
| MX28F1000PPC |
12 V |
4 K |
(xxxxxxx)s.bin |
| SST 29EE010 |
5 V |
4 K |
(xxxxxxx)s.bin |
| Winbond 29EE011 |
5 V |
4 K |
(xxxxxxx)s.bin |
| ATMEL 29C010 |
5 V |
4 K |
(xxxxxxx)s.bin |
To menu
You can DOWNLOAD file of BIOS
[M550 Specification][M550 BIOS][M550 JUMPER]
internet E_mail Addr.: engineer@pcchips.com
Modified: Feb
07 98 by Kevin Chan 