Did you try to look at device vendor web pages?
For example QLogic. You can find something interesting on their site:
8.08.01-2 is the required firmware level that it is there on the vmware compatibility matrix. i also looked for other firmware versions on vendor websites but didnt get on. could you pls help us with the link. much appriciated
Check this out:
NetXtreme II Firmware Utility to version 7.12b.4.2: