Tia Portal V11 Sp2 Update 3 Download link -

If you already have V11 SP2 installed, the easiest way to get Update 3 is to run the tool included with your installation.

While TIA Portal V11 is legacy software, Update 3 is the "gold standard" for keeping those projects running smoothly. If you are stuck on an older machine, taking the time to update ensures your HMI and PLC remain in sync without the headache of unexpected software crashes. Tia Portal V11 Sp2 Update 3 Download