Siemens Industry Online Support
Siemens AG
Entry type: FAQ Entry ID: 40945038, Entry date: 01/29/2019

Where do you find the latest firmware for S7-41x CPUs?

  • Entry
  • Associated product(s)
Listing of the current firmware updates for S7-41x CPUs

In order to obtain a quick overview of current firmware versions, the lists below contain
the current firmware versions of the S7-400 CPUs. The download link is in
the right-hand column. Generally speaking, you should always use the latest version of the
firmware on the CPU.

  S7-41x CPU FW-Updates (891,9 KB)
A list of the current firmware for the CPUs S7-31x, IM15x and BM147 is available in Entry-ID: 26290163

Additional Keywords
CPU, Operating system update, Firmware, FW, Update, Download


Security information
In order to protect technical infrastructures, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art IT security concept. Siemens’ products and solutions constitute one element of such a concept. For more information about cyber security, please visit