For the most up-to-date and secure download, you should always refer to the official Siemens Industry Online Support page.
This is official Siemens documentation for Siemens TIA Portal V15 and V15.1, allowing users to update their hardware catalog for PLC and HMI programming. Key Information: TIA_Portal_V15_HSP.zip Download v15 zip
Download the TIA_Portal_V15_HSP.zip from the Siemens Industry Online Support site. Unzip: Extract the file to a local directory. For the most up-to-date and secure download, you
748D324EC9042235880F99CDE121F0987343EF38CD3609F868EDC5EFA0AFF1AF . Alternative "V15" Zip Files Unzip: Extract the file to a local directory
Contains only the newest support packages to update from a previous version. How to Install (HSP)
To make sure this is the right "v15 zip" for you, could you confirm if you are: Updating a project (as described above)? Looking for a 12d Model 15 installer? Looking for CAESAR II v15 installation?
In TIA Portal, navigate to "Options" > "Support packages" and select "Add from file system" to install the .isp15 files.