Youre looking for a tree in the wrong forrest ;) Download [URL] or just click PS Firmwares, scroll down a bit and expand "Recommended PS Series Hard Disk Drive Firmware". You will see a *.zip and *.tgz download and a *.pdf. Download the *.tzg and take a look to the PDF how to upload the tgz and starting the update process from command line (again... EQL Groupmanager doesnt help). . 
I have just upgraded our SAN as we were getting alerts about the drives being out of date.  The upgrade was successful but I'm still getting alerts about this issue.  eg:   Does anyone have any idea why this is happening and how to rectify it?  Thanks
SANHQ reporting firmware is still out of date after upgrading