We are planning to upgrade Firepower2120（platform mode, standalone）from version 9.16.2.14 to 9.18.4.40,
and I have a question about the internal process during installing packages metioned in this upgrade guide below.
Cisco Secure Firewall ASA Upgrade Guide - Upgrade the ASA [Cisco ASA 5500-X Series Firewalls] - Cisco
Upgrade the Firepower 2100 in Platform Mode
>Upgrade a Standalone Unit Using the FXOS CLI
>step4 b install the package
At this stage, installation of the package has begun and the upgrade to the new version is being performed.
What I would like to know is what kind of process is taking place internally at this time.
(e.g. the boot statement determines what configurarion file to load, etc)
If anyone has any information, we would appreciate it if you could share it with us.
