Posting this in a few threads to spread awareness:
I've found that the Windows Update catalog retains historic BIOS information along with other driver details for ours and many other machines. Somewhat expected but lesser known information I suppose.
Anyway I found out that the entries in the WU Cat ties to a supported hardware ID which is how they are delivered to your machines.
Using this I went into Device Manager then expanded "Firmware" then opened object "System Firmware"
I then went to the "Details" tab and selected "Matching device ID" in the drop down.With the value in view, I right clicked the entry and selected copy.
Afterwards I went too https://www.catalog.update.microsoft.com/Home.aspx and pasted in the copied hardware ID into the search bar. I could then see all the BIOS updates suitable for my machine.
