Hello,
For all who are searching for an internal image of F960BT or 5000NEX here is a link.
https://bitly.ws/XTwr
I just try it on my AVIC-F960BT EU5 and it works like a charm.
You need a 4GB SD Card.
Just download the torrent an then copy the image file to the SD Card with the program Win32 Disk Imager.
Thanks to the guy who uploaded the image unfortunately I don't know who it is.
I hope I helped some folks.