Octopus Pro 1.1 H723 - flashing will not work

I'm stuck at Step 1 in the Configurator because I need to flash binaries on SD card first. Where do I find/get them?
If i click "compile Firmware" nothing happens, I was thinking this will download binary file to put on SD card.

Sorry for stupid question, klipper stuff, raspberry pi and network is all new to me, so any help is appreciated!