Unable to upgrade to 0.4.0

I can’t upgrade my node to version 0.4.0.

The behavior when I try via the browser:
“Backing up …” for about 5 seconds
The umbrel interface refreshed
But the old version (0.3.14) keeps running

Upgrade via ssh:
script runs
removing backup
Succesfully installed Umbrel 0.4.0
Still the old version keeps running

I have restarted my node, did a shutdown but the behavior is still the same.

Can someone please guide me to a solution?