Hey, any updates on this?
I just reset my tv to factory setting (to get the fireworks pause screen back, don’t judge haha) and now I get the same issue when trying to add universal control to my JBL sound bar.
The most annoying part is that I get to try turning my sound bar on/off using the Magic Remote, but when I press “yes” to confirm the setting, I get the issue prompt… even though there clearly is no issue controlling the sound bar before I try to saving the setting.