What is the most recommended way to install patches and hotfixes?

The most recommended way to install patches and hotfixes is CPUSE (Check Point Update Service Engine). CPUSE is a tool that automates the process of upgrading and installing software packages on Check Point devices. CPUSE can work in online mode or offline mode. Online mode requires an Internet connection to download the packages from Check Point servers. Offline mode allows you to download the packages manually from another device and transfer them to the target device using a USB drive or SCP. References: Check Point Security Expert R81 Course, CPUSE Administration Guide