You're looking for a direct download link for ESET NOD32 updates.
Updates are now modularized into smaller, incremental components ( .nup files) rather than a single massive archive. eset nod32 update file download direct
If a system is severely infected, network access should be disabled immediately to prevent data exfiltration. Offline updates allow you to update the antivirus engine safely on an isolated machine. The Official Stand on Direct ".zip" Update Links You're looking for a direct download link for
When automatic updates repeatedly fail due to network issues, corrupted update caches, or licensing problems, manually applying an offline update can resolve the issue and restore normal update functionality. corrupted update caches
Updates are often version-specific; using an older engine (e.g., version 8) may eventually lead to a total loss of support and protection.