[matthuisman]

I've also found toggling any PVR add-on (enabled or disabled) with make it refresh.
So, I could have a dummy PVR add-on that isn't actually used and just toggle it enabled to force PVR to refresh.
Feels a bit "hacky" though.

I see there is a demo pvr add-on though.

So, for now I use the below code to force a reload.

python:
xbmc.executebuiltin('InstallAddon(pvr.demo)', True)

xbmc.executeJSONRPC('{"jsonrpc":"2.0","id":1,"method":"Addons.SetAddonEnabled","params":{"addonid":"pvr.demo","enabled":true}}')

xbmc.executeJSONRPC('{"jsonrpc":"2.0","id":1,"method":"Addons.SetAddonEnabled","params":{"addonid":"pvr.demo","enabled":false}}')