Did anyone try upgrading Node-Red to the latest v0.20? (Version 0.20 released : Node-RED). I’m still on v0.17.5 and am a little scared of trying as I have a fair few flows in this, however I’d like to be able to use some of the latest features.
Backup your configs/nodes/etc…
Than upgrade. 
Any recommendation as to how to upgrade?
I can see an update-nodejs-and-nodered on my emonPi, but I’m wondering whether that’s enough…
Google is your friend.
https://nodered.org/docs/hardware/raspberrypi
Best to pull down the latest script.
This! 
FWIW, I just used the one on my emonPi in the end, and it seemed to work all fine!
Awesome!
Thanks for letting us know.
Has anyone actually tried this successfully? 
Yep, as I said, I did yesterday and it went fine.
I’ve yet to reboot though but confidence is high
It’s not successful until you’ve rebooted, but it’s a good start. Let us know when you have!
I didn’t need to reboot.