System

LG G2 TV

Apple 4k

ARC + Gen 3 Sub, x L + R ONE SLS

I just updated to the lasted firmware 14.18 and when i stream Disney Plus with certified ATMOS i only get Dolby Plus 5.1. When i entaille update, it was just saying i have Dolby PCM 5.1 until i closed the app, restarted the TV and checked Digital Sound Output option on the TV was set to Auto. I changed to passthrough and there is an issue with LG where this option then only produces 7.1. So after reading this forum users recommended setting it to Auto which then enabled ATMOS before i update to 14.18. I switched back to Passthrough and it had the same effect, so i switched back to auto and rather than it being Dolby 5.1 PCM its now Dolby Plus 5.1 instead of ATMOS? eARC is enabled. I can only think its something to do with the update?