While V12 SP1 is outdated, it remains essential for maintenance engineers. Many machines built between 2013 and 2015 run on V12 firmware. Since TIA Portal is not always "backward compatible" in a live environment—meaning you often need the exact version the machine was programmed with to perform an upload—keeping a V12 VM is a standard practice for industrial automation professionals.
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: Choose your preferred interface language. Component Selection : tia portal v12 sp1 install download
This is the official source. You generally need a registered account with "Export-restricted software" approval to download the trials or Service Packs. While V12 SP1 is outdated, it remains essential
V12 SP1 was designed for older hardware. Running it on modern machines may require a Virtual Machine (VM). : While V12 SP1 is outdated