I bought a 2 Din Android unit to replace the 6 cd stacker in my 2011 T31. Mine came from Lazada ( Philippine Alibaba) ..and it cost me about £100. Its an amazing unit that does everything you could ever want .. I havent had to upload or download..or install anything...totally plug n play.
I just checked ebay.co.uk and the same unit is available at a rather more inflated price of £230 ..but tbh..still cheap for what you get.
https://www.ebay.co.uk/itm/2-Din-Androi ... SwxZxb-E4zIm sure if you look around it will be available for less .... check the specs carefully..and look for the front panel design like that one.
It has an Android based satnav..upgradeable whenever via usb...radio..bluetooth for calls & music (it connects to any phone quickly & easily)... sd slot & 2 x usb inputs for any movies ..reverse cam input...video outputs for headrest monitors. It will play virtually any kind of video or music file you connect to it. It has steering wheel control lines should you need those ( i dont have..so..untested but it uses standard protocol so im sure will be fine).
The gui is beautiful..crisp and clear with a nice touchscreen to operate it all. The sound quality is pretty decent too...far better than the original Panasonic unit. Has a rotary vol control (always better than buttons!)
It has wifi too so you can if you wish connect to phone hotspot and install other stuff from Playstore. It has user-selectable startup screens so now gives me a cool Nissan logo at sw on. Dimensions are exactly double din...screwholes lined up perfectly..took an hour at most to install.
There are hundreds of these Chinese units all over ebay/Alibaba/ Aliexpress etc ..many are super cheap ... and look it.I stayed away from those and bought a kind of mid-price unit..and Im glad I did.
So far it has been faultless ... highly recommended