Help needed on RPI / WIFI USB RT5370 and VOLUMIO 1.41

Hi all !

First sorry for my english…

I’m trying to use my Ralink WIFI Dongle with my RPI and Volumio 1.41

I’ve read many helps but nothing works for me.
With wired interface it is ok : I can see Volumio trough my browser : no problem !

But with my WIFI USB Dongle, I’ve tried with Volumio 1.55, 1.41, I’ve modified /etc/network/interfaces.conf : nothing works !

All is finishing by : " wlan0 : direct probe to XX:XX:XX:XX:XX:XX (try 3/3)" and finally “authentication timed out”.

Anyone have an idea ??!

Best regards.

Maybe these links will help: