Raspberry instalation problem

Hello, please, iam instaling ratos on my new printer. Iam using older ratos on another printer for 2 years and now, instalation is little bit different, no text editor, but WiFi/Ethernet connection and setting. And here is the point. I instal ratos in sd card, put it inside raspberry and waiting for half hour, many times and nothing happend. No WiFi connection (check my phone, tablet, notebook) so i tried LAN cabel, still nothing to see. What iam doing wrong please? I hope, iam not too big idiot, that i cant instal nev version of ratos at my new printer.
Thank you very much for help.
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