Updating/ upgrading PPP Explorer with KDE Plasma

[frankt]

I was running Manjaro kde plasma.

I eventually came across this command

Sudo rm /var/lib/pacman/db.lck

Then ran 

Sudo pacman -Syyu

I'm fairly new to Linux so it took me awhile to find the right commands. But I couldn't update mine either and those commands worked for me.

This is correct. Regardless of your Desktop Environment (KDE Plaskma for example) the PPP comes with Manjaro preinstalled. So your code to update the system is the right one. 

Some ppl experienced that the database for updating the system packages was locked. This can happen from time to time if a running update quit unexpectedly. 
In addition you may experience something like "PGP key error" or "keychain error" etc -> look at this solution if so:  https://forum.pine64.org/showthread.php?...#pid105737

Thank you both for your information. The "sudo rm.." failed for me. I then ran the solution in the thread, which showed many errors, then prompted to delete old files, I chose Y for all. I ran "sudo rm.." and it installed some updates and restarted. Next update failed, ran sudo pacman -syyu again and it completed all updates. 
It now shows:
KDE Plasma Version 5.23.5
KDE Frameworks Version 5.90.0
Qt Version 5.15.2
Kernel Version 5.16.0-rc4-1-MANJARO-ARM
Very happy to finally have it updated.