Gateway upgrades and hotfixes
Write a change plan for the gateway role and exact software version. Inventory the current release, installed hotfix level and hardware. Check the supported upgrade path and package applicability. Distinguish downloading the package to the repository, verifying it against a target, and actually installing it.
Choose a representative lab or canary target. Save a recovery point appropriate to the change and record the rollback conditions. After installation, confirm the installed build on the target and run a representative traffic test. A green package-download task demonstrates only that the repository has the file.