Is there a clever way to manage Osmc updates across all devices simultaneously rather than triggering each locally on every PI? I have four installs across the house - works great with MySQL fir shared library - but keeping image versions up to date is a minor pain! Have I missed something obvious that would make my life easier?
Cheers
I would say running sudo apt-get update && sudo apt-get dist-upgrade via SSH remote command would be the easiest. Either you write quick bash script to execetue that on all machines or use some tool like pssh or DSH
http://archive09.linux.com/feature/151340
https://www.netfort.gr.jp/~dancer/software/dsh.html.en
im a firm believer in unattended-upgrades but this is not for everyone takes a bit of knowledge to set it up proper 
but once that is done everything updates and fixes itself seems more easier then messing around with bash script that can go off the handle