Sorry but I tried various ways, but sequence has no effect on Denon. Here is what I did:

1) Opened universal ediror, clicked on hex, pasted hex data for "select" and dragged it to button called "audio select"

2) cleared hex editor, pasted hex data for TV and dragged it to button called "audio TV"

3) cleared hex editor, pasted hex data for AMP and dragged it to button called "audio AMP"

I tried various cominations:

a) (1) + delay 2 sec + (2) + delay 1 sec
b) only (2)
etc

But no effect on my Denon receiver

Any advise will be great as to what I'm missing.

There is no online training for Universal Browser so don't know if I'm doing something wrong here.

I called Denon technical support, they said they don't have any such IR code and advised to use "HDMI control" to achieve the same which I'm trying to avoid.

Thanks