Thx folks for the upgrade instructions. Worked for me until I got this (when running the standard 'apt update && apt upgrade'):
The following packages have been kept back:
libffi-dev libsigrokdecode4 libssl-dev
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
Then it turns out that the system has broken dependencies (or what ever may be the reason). For example if I try to update
rock@nextcloud:/etc/apt/sources.list.d$ sudo apt -f install libpython3.11
Reading package lists... Done
Building dependency tree... Done
Some packages could not be installed [...]
The following packages have unmet dependencies:
libpython3.11 : Depends: libpython3.11-stdlib (= 3.11.2-6) but 3.11.7-2 is to be installed
E: Unable to correct problems, you have held broken packages.
But when I try updating to the required version of "libpython3.11-stdlib" it says that it's already installed:
rock@nextcloud:/etc/apt/sources.list.d$ sudo apt -f install libpython3.11-stdlib
Reading package lists... Done
Building dependency tree... Done
libpython3.11-stdlib is already the newest version (3.11.7-2).
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
And this is the case for other libraries, too. So I am not sure whether there is something wrong in gerenal ???!!!???
Info: I already tried cleaning apt and its corresponding /var/lib/apt/ dir several times.
Please help ...