This content is 20 years old. I don't routinely update old blog posts as they are only intended to represent a view at a particular point in time. Please be warned that the information here may be out of date.
The IBM website is not always the easiest to navigate and I spent ages today tracking down the latest BIOS for a number of servers. To save someone else the same issues in future, I recommend that to quickly find the latest BIOS for a PC or server, search for +flash +BIOS +update +modelnumber.
More search tips are available from the IBM website.