OK After I posted this I have found the answer. I had searched a lot but then I searched for jp1 128.4 and at last found the post with the answer. I was able to add the aspect button for my panasonic plasma to the comcast silver remote urc-1067 or urc-1068.
Here is the link that helped me.
[Link: hifi-remote.com]
johnsfine wrote:
< If you want to keep using TV/0250 (the built-in setup code for 128.0) and create KeyMoves for all the 128.4 commands, you shouldn't look for an existing 128.4 upgrade. Just use KM or RM and enter the selection for Panasonic, device 128, subdevice 4 on the setup sheet.
That "dummy" upgrade (no function nor button definitions needed) is then ready to by copied over to IR.EXE. Once it's there, you don't need to assign it to any device key. You can simply define the KeyMoves you wanted using the EFC numbers you know, and using that as the setup code. >
Here is a link for released codes from Panasonic:
[Link: panasonic.com]
I used IRtool to determine the code is device 128.4 EFC 238
