Ernie,
Do you not read responses to your other posts???
Yes, I'm busting your balls here....
You have the latest. Don't upgrade software. firmware upgrades are OK.
[Link: remotecentral.com]As most of us don't use the database cause we might want to share with the Marantz folks who don't have a user database, your concerns may be unwarranted but do have some merit.
If new devices are added to the database, there will be both a software and firmware update. New DirectTV receivers probably use some codeset that already exists and simply needs some exploration. Philips did not release any DB updates I'm aware of.
FYI...
My own personal PCF does not use a single database code.