My second career was as a programmer. Retired also. All of the latest URC remotes are PC programmable BUT you need software called CCP. It isn't available to customers unless you find a dealer/seller that will give it to you when you purchase a remote. I've read that some will and I've read that nobody will. URC will definitely not give it to you.

Most if not all of the new URC remotes have color screens, less LCD buttons than the 850 and one can use or make a specific icon for each LCD button- like a DVD icon.

Did you see my post in your other thread about how to add and test the HEX code? Are you sure it doesn't work? Also check my additional post there on something to try.