Question about LG HU80KSW Presto

I have had the beamer since the end of 2019 and have never received an update. If I also check this on the LG website, it says that the version 3.00.05 I have installed is current. (https://www.lg.com/de...).
Why Webos 3.5 is written everywhere and then (in my case) 3.00.05 is installed is not clear to me so far.

LG doesn't seem to be very good at maintaining their products, which is a pity. The browser is almost unusable, SRF shows black rectangles instead of movies. You can't find apps for Disney+ or other streaming services.
I can't say anything about Airplay because I don't have any devices.