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You can download the update and its documentation directly from the portal:

First, obtain from the official Siemens Industry Online Support (requires a valid license). Key tips:

SIMATIC S7 Distributed Safety , there is no version "V5.7." The latest version for the "Classic" STEP 7 environment is V5.4 SP5 Update 2 , which is designed for use with STEP 7 V5.6 or V5.7 Key Download & Installation Details Latest Software SIMATIC S7 Distributed Safety V5.4 SP5 Update 2 is the current update for the "Classic" environment. Compatibility : This version is required if you are running STEP 7 V5.7 or higher. Trial Version 14-day trial version is available for download at the Siemens Industry Online Support (SIOS) Operating Systems : It is executable on Windows 10 (64-bit) and potentially Windows 11 based on user community confirmations. Notable Features

download or modify a running safety program while half-watching Netflix. Always allocate a “distraction-free zone.” Conversely, after a clean safety validation, close the laptop and enjoy guilt-free entertainment—you’ve earned it.