If you reflashed your device (I think that might be what you meant by "Nokia instructer" which is meaningless), then you cannot recover what's on it. Just as if you wiped your desktop HD with a factory image. Since it's not possible, it's true that no-one here can help with it.

However, it's not clear that that's even what you did; we're having to try to guess your tablet's state from inadequate descriptions of what you've done to it. So if you didn't reflash, you'll need to post in more detail what it is that you did do.