There is a way to Edit an IR Code, for example, on Sony TVs, you have Video1, Video2 and Video3 Codes, If you check the square wave of the Code, you'll learn how Video 4 will look. How can this codes be modifyed and saved on a new one?
Actually, you only can edit freq, repeat and sustain.

Currently, you can't. The best you could do is download IR hex code editors for the Pronto, then import into the IR Library program using the hidden conversion feature.

How I can use that feature?

Abe:

Assuming that you already know how to use the Pronto Edit software, copy the hex codes from the Pronto Edit device window, go to Edit Text of the device that you want on the T2 IR Library, hit F12. This will show the hidden Hex code window feature, Paste the hex codes you copied from the Pronto. Go down to the bottom and name your function. Click close to save it. Redo other functions as necessary. If you want more specific details, check out the thread call "Just when I thought....Pioneer Elite problem". Good luck.

Joe
It's ok, but I never have own a Pronto, so, I don't have the edit software.

Abe,

That's the beauty - just download the Pronto software from this site, and the CCFs you want. You don't need to own the Pronto. You will have to learn the Pronto software enough to acces the hex codes, though.

DJ