flash-kernel doesn't properly support Pi Zero 2

[Juerg Haefliger]

$ sudo flash-kernel --force $(uname -r)
Using DTB: bcm2711-rpi-4-b.dtb

^^^ ?

Installing /lib/firmware/5.13.0-1008-raspi/device-tree/bcm2711-rpi-4-b.dtb into /boot/dtbs/5.13.0-1008-raspi/./bcm2711-rpi-4-b.dtb
Installing new bcm2711-rpi-4-b.dtb.
Installing /lib/firmware/5.13.0-1008-raspi/device-tree/bcm2711-rpi-4-b.dtb into /boot/dtbs/5.13.0-1008-raspi/./bcm2711-rpi-4-b.dtb
Taking backup of bcm2711-rpi-4-b.dtb.
Installing new bcm2711-rpi-4-b.dtb.
flash-kernel: installing version 5.13.0-1008-raspi
Taking backup of vmlinuz.
Installing new vmlinuz.
Taking backup of initrd.img.
Installing new initrd.img.
...

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu Jammy Jellyfish (development branch)
Release: 22.04
Codename: jammy

$ cat /proc/device-tree/model
Raspberry Pi Zero 2 Rev 1.0

[Dave Jones (waveform)]

Effectively a duplicate of LP: #1928314 which has a longer explanation :)