That is exactly what we are going to do but not this evening Thanks for your advice, I will definatively look at your instructions when I have some time and post the results here.

Just to make it faster to get media files to my tablet. I have noticed that using a card reader is the easiest and fastest way to get the files to memory card. I have also Navicore installed that takes about 1 G and it has to have map data on memory card (if I have understood correctly). 2 G is also fine, I can always transfer the data to this free one giga space with card reader and move it inside tablet to internal memory. At the moment the problem is just that I don't have the missing 2 G space either on "memory card" or on "internal memory".