I have two Firesticks controlled by my two Pronto TSU9800 remotes using the INT422-3 Universal Remote with IReTV and OTG Y Cable. I learned the codes from the INT422-3 Universal Remote. This works great. However, I thought it might be possible to get the Prime Video, Netflix, Disney and Hulu shortcuts added to my Pronto as well. I l searched quite a bit and found nothing useful. I also tried all 256 codes with MCE D116, S15 without any success. Please let me know if this is possible and if so, what would I use.

Thank you, Mark