Yeah, the firmware is impossible to access online, as far as I can tell. It is quite likely still somewhere in the labyrinth that is the HP website, but with so many broken links you would probably need to have an exact URL to get there. I have the Postscript firmware for the 44" that I could send you, but I doubt that is what you need. You could try calling HP, but since you are most likely no longer under warranty, I imaging they would charge you to talk to them. HP updated the sales portion of their website, which is a big improvement, but the bulk of their site remains the worst website I have ever encountered for a technology company.