How to enable kernel and firmware upgrades without armbian-config?

[GerryK]

I STFW now for hours but didn't find a solution to this:
When I login to my new installed OdroidXU4 image of armbian minimal it says:
[ Kernel and firmware upgrades disabled: armbian-config ]
# armbian-config 
gives: 'command not found' 
So I searched for a way, a hint, an instruction how to enable those 'Kernel and firmware upgrades' without having to install 'armbian-config' with no avail.
How can I archive this?
Thank you in advance;
Gerry

[Werner]

Either use dpkg to remove "hold" of all firmware packages

or

apt install armbian-config

[markjay]

You can also use apt-mark. Try "apt-mark --help" to see how to unhold your kernel version