Hello, i have the same problem, I have made an upgrade from 4.2 - 4.3
I had had a problem with libraries installed by third programs during the upgrade.
I used these commands to reinstall the original packages from this link.
https://forum.sailfishos.org/t/how-to-reinstall-original-package-version/3223/3
devel-su
pkcon refresh
version --dup
Then I used the official instruction to install the upgrade via the terminal.
After that everything worked, but I can’t get MP3 to work. I have already reinstalled Storeman, downloaded libmpg123 over browser and reinstalled it.
“ssu dr” = came the answer too few argument and the same with “ssu er”
Does anyone have any other tips?