Hi Mohamed,
AR H4.23 is not available for download because as I’ve seen it was part of the Automation Studio V4.2.3.159 main installation package.
The upgrade is bigger as 10MB, so unfortunately I can’t upload it here.
But you could extract it out of the complete AS installation package which still can be downloaded from the website:
- navigate to this download link for AS4.2 family: Automation Studio V4.2 | B&R Industrial Automation
- scroll down to version V4.2.3.159
- download the package AS_4.2.3.159_DVD.zip
- after downloading extract it, navigate to the subfolder “/Setups/AddOn” and find the file “AS4_AR_H0423_X20CP1585.exe”.
Best regards!