As you know Problem with Compaq: their bios updates are unique, like Intels. The Softpaq's do not give access to the actual bios file (have tried to extract with Sofpaq util and others but is never successful).
The odds of someone else with same board is rare which means any one with a old Compaq needs to find a way to save their bios as an image as soon as they get their Compaq.
Sorry I have no good news other than the same BIOS was used in:
"Presario Models 7350, 7360, 7400, 7430, 7450, 7453, 7454, 7460, 7461, 7462, 7463, 7464, 7465, 7468, 7469, 7470, 7471, 7473, 7474, 7475, 7476, 7477, 7478, 7479, 7480, 7481, 7482, 7483, 7485, 7486, 7487, 7922
ROM Version 686S4, dated 07/25/00"
based on: SP17455.txt for SP17455.EXE Presario Specific Models System ROM Update #1 for Models Sold in 2000 VERSION: 1.04 Rev A
That was the last bios update AFAIK.
Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor. Stuff: https://archive.org/details/@horun