Interesting that MENU 238 Function 001 (0x01) does not work. I'm using it with TVOS 15.X

0000 006C 0022 0002 015B 00AD 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0041 0016 0575 015B 0057 0016 0E6C

UPDATE 20220304 - Tested Channel Up/Down with Apple Music Library in US and these commands change the track on TVOS 15+.

While testing the above and listening to music with Apple Music Library, I pressed UNKNOWN_A and the unit appeared to accept this as some way to control volume and asked me if I wanted to configure the Volume Control. However, I was only able to see this one time. I cannot find a way to reproduce this after this one time. :-(