@Crowe10291 do you plug it in to one of the Deco ethernet port or do you plug it in the main router? I might try plugging in the Apple Airport router that this deco M5 replaced

@Ingvar I HAVE THE EXACT SAME PROBLEM AS THE FIRST POSTER. EXACT SAME CAR (VOLVO XC90) THAT I TRIED TO CONNECT TO MY WIFI TO UPDATE FIRMWARE BUT COULDN'T CONNECT DUE TO THIS TKIP THING AND THERE IS...