Don't seem to be able to update anymore?

[Aragorn]

Perhaps of interest to you…

[HowTo] Updating Manjaro as safely as possible

The golden rule — which nobody follows, of course — when using a rolling-release distribution…: Always apply the bundled updates by way of the command line in a tty while completely logged out of your graphical environment, so that no shared libraries will be in use that will be overwritten by the update process. The safest way even would be to cleanly reboot your system first before applying any updates, and to then switch to a tty and run the update process from there without logging into…