A:AnswerYes, I'm able to mirror it on my Samsung fridge. The connection seems to go bad sometimes. The picture gets pixelated and sound is garbled. If I disconnect and reconnect that seems to clear it up.
A:AnswerThere is an Ethernet port. It's recommended that you use CAT7 grade cable. It's how I have mine setup. I would always use wired over WiFi. There no "wired WiFi" it's either Ethernet or WiFi (basically).
A:AnswerYou can change the settings for the digital optical output from 5.1 to PCM for 2-channel audio. Once set, it seems to stay there, even when the set is turned off and back on again. . I wasn't able to find out if it actually works properly, but at least it sets up properly for this function in the menu..