Ron, Tom and others with PS version on a Mac
I downloaded the firmware and initially had the same problem of not being able to retrieve the Custom Paper list over a network. In my frustration, I closed down the HP Utility and turned off the machine (with the hard switch at the back). When I turned the machine on again and opened the HP utility, I was able to retrieve all the custom paper list over the network. I can't explain what happened since I am not a techie but it sure solved that problem (at least for me.)
Tom, and others interested in the PS version on a Mac-
I just ran the firmware updater and successfully loaded the new firmware. All went according to plan, except for an error message that seems to have been a red herring. I got an error of 68:03, which means "loss of engine counters tracking". It was cured with a restart, and all seems fine after the upgrade.
To your delight, Tom, the Job Queue and Job Accounting logs are intact and unchanged. Unfortunately, for my particular problem, I'm still unable to retrieve the Custom Paper list while connected via ethernet network, although I can calibrate and add new paper types over the network.
I notice that there is now a paper move menu command in the paper submenu. I'm looking forward to that new functionality, as well as the ability to change cartridges on the fly (testing this feature soon). I will test the ability to load photo papers without trimming the leading edge with my next paper change, although I won't know what to do about wrapping in progress rolls of paper without a bountiful supply of three inch paper trimmings (!).