@netbsd@mastodon.sdf.org I've noticed a curious behaviour: I gave my kernel a non-standard name (i.e., not "GENERIC"), and now `sysupgrade` tries to download a kernel with my name from cdn.netbsd.org and, obviously, fails with a 404. I'll try to find a workaround and update you here! UPDATE: KERNEL=GENERIC in `/usr/pkg/etc/sysupgrade.conf` did the job :-)