Now that is strange.. While it seemed frozen on a logo screen, I connected to it via Ethernet from Cura and successfully sent it a print job. Now it prints it like nothing happened, while the screen remains frozen. So, I suppose I have some time until it runs out of filament 🙂 Unless I somehow manage to cheatingly change it without the screen
By the way, Cura reports it having firmware 6.1.1. I don't know the hardware version, but it's the old one, with robots on sides.