If you rely on EPLAN for medium-to-large projects or have experienced instability, memory limits, or data-exchange issues with earlier 2.9 builds, Update 4 is a safe and worthwhile maintenance upgrade. For small-project users with stable workflows, upgrading is lower priority but still recommended eventually to keep on supported, more stable software.
: SP1 provides more direct access to the new EPLAN Data Portal, offering deeper data quality for cloud-registered users. Technical Specifications & Requirements To run the Eplan Electric P8 Version 2.9 Sp1 Update 4 X64
Despite fixes, some limitations remain (documented by Eplan in the release notes): If you rely on EPLAN for medium-to-large projects