I finally managed to get the automatic updater working. See No permission to access updater.
I’m on 3.4.3. The automatic updater only offers 3.4.7-RC1:
“Update to phpList 3.4.7 for testing is available.”
and not 3.4.6 which is supposed to be the latest stable version.
Please add options to which version to update. Or did I miss something?