Firmware Update for SCALANCE modules.

Improvements:

• Compatibility with HSP for TIA Portal V15.1 and V16. For HSP0325 for TIA V15.1 and TIA V16, it is recommended to upgrade the target devices to firmware V4.2.1.
• Adaptation of the device types that support PTP
• Improvement of the message frame prioritization in conjunction with PROFINET. This leads to increased robustness in PROFINET operation.

Bug fixes:
Problems relating to the connection to the SFTP server solved.