Sam, Bluetooth option does show up under OSMC -> Network but the Start/Stop Discovery does not stick, it just flashes and stays off. All paired devices have disappeared from the list.
btw, wifi is unable to locate any wifi connections, so similar issue there as well.
I can also confirm that WIFI is not working, though I normally don’t use it. Bluetooth does show up in the OSMC app but toggling states does nothing. This looks like a kernel module problem where it isn’t loading the wireless chip set.
OSMC update fixed the bluetooth issue. Wifi is still an issue. Not working was probably misleading, it is actually not showing any wifi connections to select and connect to.
Alternatively, try this fix. It might resolve things for low signal WiFi situations.
Login via the command line
Edit the file /etc/apt/sources.list
Add the following line: deb http://apt.osmc.tv jessie-devel main
Run the following commands to update: sudo apt-get update && sudo apt-get dist-upgrade && reboot
Your system should have have received the update.
Please see if the issue is resolved.
I also recommend you edit /etc/apt/sources.list again and remove the line that you added after updating. This will return you to the normal update channel.