I’ve finally decided to update from July21 to the newest version and I cannot watch 4k videos anymore.
I saw the other thread about HEVC so I tried HEVC 1080 videos and they work fine. It’s just 4k that result in blue screen.
The box itself is not crashing, I can stop the video and play another one. Hard and soft restarts don’t help.
My TV is LG OLED.