Michael, how many sources do you have? The 4 numbered buttons on the remote can be assigned to any 4 inputs, so if you have 4 sources or less, then you can access them directly with the numbered buttons.
If you are using more than 4 sources, then without the discrete codes you are stuck using the input cycle button. Did you try Remote Central to see if anyone extracted the discrete codes?
If you are using more than 4 sources, then without the discrete codes you are stuck using the input cycle button. Did you try Remote Central to see if anyone extracted the discrete codes?