I only have one Vero 4K+ box and I don’t have any other dongles it could connect to. It seems to control it just fine but if it doesn’t for some reason id itself correctly it would explain why the long press support isn’t working?
Where did you get your Vero from? Not only is that dongle not from OSMC but the remote isn’t either as I notice in your logs that it is sending out at least one key that has never been programed to any OSMC remote.
As your not even using the same hardware it is not likely your issue is related. I would recommend starting a new thread with a description of your issue. You might try another power supply or seeing if a fresh install on your SD card works first though.
I don’t know of any problem with the last update that would keep a machine from booting. We have one report from one Vero user and you on a RPi out of a very large number of people who have installed the 18.6 update. This is not indicative of a problem with this update.