To update your hardware catalog so you can select V4.3 in your project:
To download the HSP0276 S7-1200 CPU V4.3 firmware, follow these steps:
Locate the section labeled or V15.1 .
The V4.3 firmware supports a wide range of S7-1200 models, including:
Close all background Siemens processes. Open the Windows Task Manager (Ctrl+Shift+Esc), locate any remaining Siemens.Automation.* processes, end them, and restart the installer. 2. Missing V4.3 after successful installation
This HSP is generally used with TIA Portal V15.1 or higher. Key Features of S7-1200 CPU Firmware V4.3
A window titled "Detailed information" will appear showing your currently installed support packages. Click the button at the bottom.
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Click and browse to your downloaded HSP0276 file. Select the package from the list and click Install .
The standalone TIA Portal Software Updater window will launch automatically to finish processing the installation.
(in TIA Portal V16 and above, this is under Options > Global options > Support packages ).