Second minimal ISO is uploading. KaOS moved to Qt 5.15.1 2 days ago, that meant full rebuild of Frameworks 5.74.0 & Plasma 5.19.5 (and all other needed rebuilds for new Qt). You will find this on the new ISO.
Fixed are a few issues, systemd-boot now sets the correct default to load, nvidia 340xx works properly again and launching Calamares has a different setting again. Latter will still need testing, upstream has bugs in using different threads for checking internet, this can (and will) cause crashes on QML modules.
This ISO will try one more time to use the hasInternet build-in check from upstream. If there are still crashes with:
QQmlEngine: Illegal attempt to connect to CalamaresUtils::Network::Manager(0x2404100) that is in a different thread than the QML engine QQmlEngine(0x2572df0).
then the next ISO will stop using the hasInternet call and set internet checking in the Calamares launcher script.