I have updated to this firmware on OLED809. A couple of bugs.
Most times when the TV is in standby and Switch on with Chromecast option is enabled. I think this spams CEC instructions even if nothing is casting. If I’m using my PC on my monitor and the TV in standby, the TV will connect and disconnect every so often, making the PC unusable as the screen on the monitor keeps flashing. However I don’t think it’s limited to this firmware as happened on previous firmware too.
When switching the TV on from standby, the using HDMI audio system message appears (which is correct as I am using an audio system) but after a 10-20 seconds using TV speakers message appears. However, the sound output option shows Home Audio System as selected and the sound still comes out of the Audio system for my satellite box (Sky Q) but unable to control the volume of the audio system from the TV remote. When opening YouTube the audio will stop on my audio system but the audio comes through the TV speakers! Selecting the already selected Home Audio System option in the audio output seems to fix this issue and then the YouTube audio comes out of the audio system. This did not happen on the previous firmware
Finally I have an issue with my Sky Q, when the sound system is in standby, the sound system passes through the HDMI signal, this seems to reset the resolution of Sky Q to 1080i and unable to select 2160p. However I am not sure whether this is the TV, audio system or Sky Q itself. Sometimes I can passthrough 2160p, sometimes I cannot