This is a real longshot since I think you have already done this but here are the same commands as the SIRTS-160 only instead of using 9.9 (Device=9, Sub-device=9) the DSS device/sub-device codes, I used 7.7 (that is what the HDTV device/sub-device codes are and what is in the Pronto hex that you posted) and commands 152 and 153.
I know GenIRDB and use it all the time but to auto-generate all 256 commands MakeHex is probably easier. As you proably know the NEC protocols have 32 data bits: Device, Sub-Device, Function (or command), and the complement of Function each 8-bits. The sub-device defaults to the complement of D (or 255-D in decimal).
Samsung codes seem to always use Device=Sub-device (so far)
To generate those codes, this is the NEC2.irp protocol file from MakeHex (it is very similar to GenIRDB because John Fine who wrote MakeHex and Barry Gordon collaborated on a protocol defintion format: ************************************ Device=7.7 Function=152..153
Protocol=NEC2 'Like NEC, but repeats entire pattern Frequency=38000 Time Base=564 One=1,-3 Zero=1,-1 Prefix=8,-8 Suffix=1,-84 Default S=~D Form=;*,D:8,S:8,F:8,~F:8,_ *************************************
If you want to generate all commands just change the Function=152..153 to Function=0..255
