As the title says, august update causes shutdowns. As far as I can tell I have no sleep or screensaver settings or anything like that turned on. Also, the cross does not shine. So maybe more like a freeze with no picture?
Logs after latest powercord replug https://paste.osmc.tv/degutobebu
While it might not impact your problem (but you never know)
We recommend people with 4K TV’s set their user interface (UI) to 1080p. Kodi’s UI is not optimized for 4K yet and this can put unnecessary demands on your device and can lead to a suboptimal picture quality, as well as potentially cause other issues.