@nutilius it looks like you have a new userspace with an old kernel. This will cause problems.

Raspberry Pi Zero needs the kernel in a custom format for its firmware, the one with the .img extension here:

https://cdn.netbsd.org/pub/NetBSD/NetBSD-11.0/evbarm-earmv6hf/binary/kernel/

Most upgrade scripts won't handle this step automatically. An option for you is to mount the boot partition on the SD card and update the kernel .img manually.