My "solved problem" Sony WH-1000XM3s can connect to my TV and have their volume controlled. My Apple AirPods Pro can't... Neither pair will switch between my i

My "solved problem" Sony WH-1000XM3s can connect to my TV and have their volume controlled. My Apple AirPods Pro can't... Neither pair will switch between my iPhone and MacBook without triggering a manual pair from the Bluetooth menu. To get that working for the AirPods I have to update to Big Sur but apparently that has a good chance of bricking my MacBook so I can't.