There are several threads in the discrete forum telling you how to use the info from the Denon documentation with the MakeHex program to produce Pronto Hex.

Some versions of Universal Browser (part of the MX editor) can take Pronto Hex directly.

But for importing a bunch of codes, I think the old way is a little easier. Us IrPanels or Hex2CCF to convert the output of MakeHex to a CCF file and then use the CCF file in Universal Browser.