Firmware Update - Siemens SIMATIC S7-1500/ET 200MP System Manual

Maintenance

14.5 Firmware update

14.5 Firmware update
Introduction
Update the firmware of the CPU/interface module, display and the I/O modules using
firmware files. The retentive data is retained after the execution of the firmware update.
We recommend that you always update to the latest firmware version available for the
respective article number. The previous versions of the firmware are only intended as a
backup to enable you to downgrade to the original version.
A firmware update has no effects on the user program of the CPU on which the update was
performed. However, a downgrade can have effects on the user program if you use new
functions in the user program which were not yet supported by the firmware of the CPU.
Note
Possible older firmware versions for CPU with firmware version V3.0
You can load a CPU with firmware version V3.0 with a STEP 7 project based on an earlier
firmware version:
• For CPUs with article numbers 6ES751x-xxx03-0AB0: Firmware versions V2.9 to V1.8
• For CPUs with article number 6ES751x-xRx03-0AB0: Firmware versions V2.9 to V2.6
• For all other article numbers of the CPUs: Firmware versions V2.9 to V1.5
The CPU with firmware version V3.0 then responds like the CPU with the previous firmware
version and supports only the functionality of this earlier version. This also applies to the
configuration limits.
The following entry (https://support.industry.siemens.com/cs/de/en/view/109478459) lists all
firmware versions for the S7-1500 CPUs including displays. You will also find a description of
the new functions of the respective firmware versions.
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Automation system
System Manual, 01/2023, A5E03461182-AK