CCSE
https://training-certifications.checkpoint.com/#/courses/Check%20Point%20Certified%20Expert%20(CCSE)%20R80.x
This section provides instructions to upgrade dedicated Log Servers:
Upgrading a Dedicated Log Server from R80.10 and lower with CPUSE
Upgrading a Dedicated Log Server from R80.10 and lower with Advanced Upgrade
Upgrading a Dedicated Log Server from R80.10 and lower with Migration