: Blocks previously marked as "Unsupported" are automatically supported following a project upgrade to Update 4.
: Users report that this update makes the software run noticeably smoother, with reduced lag times and a more responsive interface compared to V13 SP1 Update 1 or 2. Enhanced Programming Features Multi-instance tags siemens tia portal v13 sp1 update 4 better
Projects from V13.0 must be upgraded to a V13.1 format when first opened in SP1. siemens tia portal v13 sp1 update 4 better