Retropie 4.7: Unable to connect to Wi-Fi

[Slateman]

Hi, I have a Raspberry Pi 4 Model B and I regularly installed the latest version of Retropie. Unfortunately, I'm struggling to be able to connect with my Wi-Fi, and it happens with both my home router Wi-Fi and with my phone hotspot. I purged rfkill and set the country of my Wi-Fi connection, but in the option to connect it appears only "0" and "Hidden ESSID". I also tried to create a file wifikeyfile.txt, but after appearing "Connection..." it says "Unable to connect to Wi-Fi".

I hope to receive help because at this point, I don't have any clue to fix this issue.

[mitu]

Please add some more info about your setup, as detailed in https://retropie.org.uk/forum/topic/3/read-this-first.

You shouldn't have removed rfkill, I suggest you reinstall it. What's the output of the following commands:

rfkill list all
iwconfig

Another method to configure the Wi-Fi is to create a complete wpa_supplicant.conf cofiguration file, including the country, as explained here.