Hi,
I got my hands on a panasonic strada stereo.
All the functions are there but the language is in japanese. no possible way to use the menu to change the language. also the radio frequencies are not what they are in europe.
S310 file seems to contain the full firmware of the stereo. But I have yet managed to figure out how to modify it. For some reason I think there is English language file present, but hidden. Or if someone is able to extract it, I am willing to manually translate everything.
https://mega.nz/#!6d8HwbQA!cI-eE4qdf...5r9KlZaNiGegDw
File is safe to download and files are from officcial Panasonic website.

There is also a second smaller file, should be an firmware update i think?!? the stereo should be sd flashable.
But if needed I will try and pull the firmware from the stereo itself.

Any ideas are welcome.