Thanks - I don't seem to have `35_fwupd` in etc/grub.d before updating (does it appear after the update perhaps)?
This is what I do have in `grub.d` before the update:
[email protected]:/etc/grub.d$ ls
00_header 10_linux_zfs 30_os-prober 41_custom
05_debian_theme 20_linux_xen...