

Uuuuhh, I don’t know. I never did that manually, it seems to auto-update after upgrades.
To be honest I haven’t thought of it. I only know it is recommended to re-install GRUB with GRUB updates. But simply pacman -Syu has so far always left me with a bootable system.
Edit: Didn’t find anything in pacman hooks.
Only from the Lemmy image view, but the original is JPEG and you can download it too.