...
For Use Case A the MFW V1.2.0.0 (File MFW-netX90_flash.mxf) is or later can be used.
Insalled on netX the firmware ECS V5.1.0.4
...
Now create FWUPDATE.ZIP. The name of the zip file must be exactly FWUPDATE.ZIP .
Open the FWUPDATE.ZIP and take cate that the folder inside is VAR0\XIP\ and not FWUPDATE\VAR0\XIP\
More information can be found here: Firmware update. For example the settings for the zip archive.
...
6. ESI file
Add FoE to ESI file:
Copy the updated ESI file to TwinCAT3 folder C:\TwinCAT\3.1\Config\Io\EtherCAT
7. TwinCAT
Start TwinCat. Change the device state to PREOP and select "Download...":
...