No brand Chinese head unit with no maps ?

Hi guys,

I am on a hunt.
My hubby purchased a Chinese no brand autoradio/gps a while ago. ANow that it is installed it in the car, after hours of sweat and tears, it finally works.

But it came without a SD card, so without maps.

And my hubby really really wants maps. We contacted the seller, but they answered us with an English worse than mine (yes, that is possible) that they do not sell the maps (but that they would give us a discount if they did :)))).

So we are looking for maps. Well, he was, and since it is really getting on his nerves, I am looking too (I am much more patient).

So this autoradio/gps has no name, which makes it hard. I know nothing, so I did not even know where to start. All I know is that it is WIN CE.

I know I probably sound very dumb, but can anybody tell me if I can download something to copy on a SD card to make it work, and where I can find it?

Thank you so much in advance! My sanity is in danger :classic: