The avrdude update worked great on my RPi400. I downloaded nou's astrosoft software to rebuild INDI and KStars with the nightly build, it's easy and it works. Just do the following: sudo apt install git cd .. git clone gitea.nouspiro.space/nou/astro-soft-build cd astro-soft-build ./install-dependencies.sh ./build-soft-latest.sh Go for a liesurely coffee, read a novel etc. and it'll finish eventually Read More...