Some of the buttons are incorrect; I had to learn it from the original remote. Can you fix this?

Yes You don't need the triangle and square on the homescreen, but within a media app (netflix, disney+, Hulu), you need it for some functions.

Is there any TV that successfully replicates the PS button? Then we can use that button ID without bluetooth mode on U1.

how did you add the x, square, triangle, circle buttons?

I don't think there's a way to do this... Sofabaton should implement this