So this is the standard way to update any package, So easy, I should have test that before posting here ....
I just successfully do :
apt update
apt list --upgradable
armbian-config/inconnu 25.5.0-trunk.53.0213.103604 all [pouvant être mis à jour depuis : 25.5.0-trunk.18.0207.210415] --> YES there is an update available
apt install armbian-config --> juste to update only this package, to no impact other part of my system
And ....TADA ! I now have all the latest "software" available in armbian-config available 😉
thx again