That looks very good. Thanks for that! The only thing I would add is the replacement from Buster to Bullseye in the Node-RED package repository: sudo sed -ie 's/buster/bullseye/g' /etc/apt/sources.list.d/{raspi,revpi,nodesource}.list As soon I have another RevPi on my desk I will test this procedure...

Sadly as off today I don't have the device anymore in office. It's already shipped abroad with a fresh image of Bullseye.

Could you please give me a short list of commands how this would work out.
So I could test it on the next device.

Many thanks in advance!

Thanks Nicolai for the feedback! But in the current state this is not usable for me. We have a lot of devices abroad and I would need a robust and supported way of performing the Bullseye upgrade because there is no easy way to access the device if it doesn't come up after the upgrade. So for me we ...

So the only supported way to get to Bullseye would currently be to start from scratch by flashing (the most recent) image of Bullseye. Correct? It would have been nice if the release notes have stated that the in-place upgrade from Buster to Bullseye is considered to be experimental / not-supported....

Hallo, wir planen in den nächsten Monaten alle unsere Geräte (RevPi Core 3+ / S /SE) von Buster auf Bullseye zu aktualisieren. Wir führen gerade Tests hierfür mit einem RevPi Core S durch und der Upgrade-Vorgang endet immer mit einem Fehler. Ablauf: Gerät: RevPi Core S 8 GB Image: 2023-01-12-revpi-b...