You have the same xtrail model like mine, so removing the radio is VERY easy.
Open the left cooler box and inside it you will see a 10mm bolt, remove that bolt and tilt the steering wheel all the way down, then unclip the whole plastic (silver) fascia around the radio with your finger nails, it will come off easily and there are no more screws holding it in place.
As soon as you remove that silver plastic fascia, you will see 4 screws holding the double-din radio in place, take off these 4 screws and the radio will be in your hands.[/quote
thanks, I just used your advice in 2014 so you live on!