Flash Bios Update and Manual:

 

M55HI-Plus (P/N 09-00273(-39 or lower):

  M55HI03.EXE
(133 kB, 11-Sep-98)
Flash Bios Update for Micronics Mainboard M55HI-Plus with Sound ver -03 (Corrects issues with Cyrix 6x86 processors, update to Phoenix 4.05 core, support for hard drives up to approx. 4 gigs)
  M55NS03.EXE
(134 kB, 11-Sep-98)
Flash Bios Update for Micronics Mainboard M55HI-Plus without Sound ver -03 (Corrects issues with Cyrix 6x86 processors, update to Phoenix 4.05 core, support for hard drives up to approx. 4 gigs)
  M55HI04.EXE
(267 kB, 11-Sep-98)
Flash Bios Update for Micronics Mainboard M55HI-Plus with or without Sound ver -04 (Update to Phoenix 4.06 core, support for hard drives up to approx. 8 gigs. WARNING: this Bios does not support Cyrix6x86!)
  M55HIPLS.PDF
(544 kB, 11-Sep-98)
Manual for Micronics Mainboard M55HI-Plus in PDF format (Adobe Acrobat Reader will be required)