Update and Upgrade Error

Hello,
I use a raspberry with openhab 2.3 and openhabian.

I bought 2 shelly plug, and would like to upgrade to the latest openhab to use them.

Unfortunately I always get an error message. I suspect the error is due to the move from Bintray to Artifactory. Unfortunately, none of the instructions available on the net has brought me further.

My current attempt hangs at:

wget -qO - 'https://openhab.jfrog.io/artifactory/api/gpg/key/public' | sudo apt-key add -

cd /etc/apt/sources.list.d/

sudo bash

nano openhab.list

Now I would like to:

deb https://openhab.jfrog.io/artifactory/openhab-linuxpkg stable main

However, here the monitor is empty apart from the save as etc. below. Nothing seems to be displayed in the file. I access the system via Putty.

What could be my problem? What am I doing wrong?
Thanks in advance for any tips.

Greetings Carsten

Install openHABian from scratch to a new SD card using clonebranch=stable (see docs), that’ll get you 2.5.12. Then ex- and import your existing config using openhab-cli.

Does work even with #1628 still open?

Can I install openHAB 3 on the new SD and use the backup file from my openHAB 2.3, or should I install openHAB 2.5 first?