Example Windows PowerShell approach (conceptual):

To manually update a standalone machine from a local folder:

: This is the official utility for creating an offline repository. It downloads detection engine updates and program modules from ESET servers and saves them to a local folder or shared network drive. Update Mirror Feature

Kael froze. "What?"

under the Update Mirror settings to allow other machines to "pull" updates from this one [10]. Phase 2: Update Offline Clients