Tia Portal V13 Sp1 Update 4 Extra Quality -

Update 4 is the last official update for V13 SP1. No Update 5 exists. If you are on V13 SP1, Update 4 represents the end-of-life (EOL) stability patch.

One of the most notable technical shifts in Update 4 was the improved handling of safety-related programming and multi-instance tags: Automatic F-Block Support Tia Portal V13 Sp1 Update 4

Here is a breakdown of the version string: Update 4 is the last official update for V13 SP1

This update focuses on stabilizing the engineering environment and fixing bugs identified in earlier versions: System Stability: Tia Portal V13 Sp1 Update 4