: If you already have V12 installed, you can still find the Service Pack 1 updates on the Siemens Support site for STEP 7 and WinCC . Can I download TIA Portal V12 SP1? - SiePortal - Siemens
Place all downloaded parts into a single, dedicated folder on your local drive ( C:\Siemens_Downloads ). Do not attempt to run files from a network share. download tia portal v12 sp1 top
So, how do you get the software now? Based on official Siemens support forums, you have two primary and legitimate paths. : If you already have V12 installed, you