james999, With the 4th and 5th characters in your chip serial being "AG" your chip is only 2GB. Any files that you transfered over the chips true capacity would have been corrupted, that is why you were getting errors because files were being copied to memory that did not exist.

my files was corruptet only when i copy files over 3GB not 2GB
yes i know the parametres

K 9 W A G 0 8 U 1 A - P C B 0
------------------
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

1. Memory (K)
2. NAND Flash 9
3. Small Classification W:Single Level Cell 4 Die Stack
4. Density AG:16G
5. Organization 08: x8
6. Vcc U:2,7V-3,6V
7. Mode Dual nCE & Dual R/nB
8. Generatnion A:2nd Generation
9. Package P:TSOP1 (Lead-Free)
10. Temp C:Commercial
11. Bad Block B:Include Bad Block
12. Pre-Program Version 0: None
13. ....
14......
15. .....
still i do not understand that all and what is going on?! why the producer made hacked memory??

james999 , by hacking a 2GB to look like a 4GB or 8GB, they can sell the player at a higher price and for more profits.

how can i Flash player to look like 8GB? is it possible? :?

james999 , why would you want to hack the memory to 8GB?

By doing so, you will only give yourself the same problems as before (ie files unable to delete/move, files renamed).

You can hack the memory chip to show 100GB. But you can only store 2GB that's all. Anything above the 2GB mark, would have problems.