How to fix "PGP signature key invalid or corrupted" in my pinebook pro?

Hello, I think I am getting corrupted PGP signature keys because I forgot to upgrade for a while.

But I have tried a lot of the answers in this forum and I cant get it to fix it.

for example, I have tried this:

sudo cp -f "/etc/pacman.conf" "/etc/pacman.conf.orig" 
sudo sed -i 's/SigLevel.*/SigLevel = Never/' /etc/pacman.conf  
sudo pacman -Syy gnupg archlinux-keyring manjaro-keyring --ignore manjaro-system 
sudo mv -f "/etc/pacman.conf.orig" "/etc/pacman.conf" 
sudo rm -r /etc/pacman.d/gnupg 
sudo pacman-key --init 
sudo pacman-key --populate archlinux manjaro && sudo pacman-key --refresh-keys 
sudo pacman -Syu

And this:

sudo cp -f "/etc/pacman.conf" "/etc/pacman.conf.orig"  
sudo sed -i 's/SigLevel.*/SigLevel = Never/' /etc/pacman.conf 
sudo pacman -Syy gnupg archlinux-keyring manjaro-keyring --ignore manjaro-system
sudo mv -f "/etc/pacman.conf.orig" "/etc/pacman.conf" 
 sudo pacman -Syu

Can someone suggest how i can upgrade my system please?

thanks

Right bellow your topic I think I had the same problem

Try updating mirrors:

sudo pacman-mirrors --fasttrack && sudo pacman -Syu