Hi everyone. I am new for N810. I update latest firmware. After that I click Maps icon, I got the message " No Memory Card Found Could not find memory card!" I look inside N810 File Manager I saw internal Memory card.
How can I fix this problem, please???
Thank you very much.

Well if you're using an N810 you can't remove the internal card so that shouldn't be an issue, although it could get dismounted from the file system (apparently not the case since you see the icon), maybe it's trying to find maps on an external card? You could try hooking a card up and see if that fixes it, also you do actually have maps on your internal card right?

Yeah, sounds like the internal card is working, but the extrnal has died somehow. I'd just go ahead and remove it from the tablet, clean the contacts, and put it back in. Also check the adapter. If it's bad, replace it.