Hi all,
Is there any way to let the ERS for RPi4 works on RPi5?
As a workaround I tried installing Ubuntu on RPi5 and then the ERS for Linux with no success.
Max IU4JNR

I reply to myself. I had some mail exchange with Roman which addressed me to the solution. It is easier than I expected.
After installation of any RPi5 software, just download and extract into a folder the server software for arm. Launch Start and have it.
73, Max IU4JNR