Finaly i get the Product Tool works on my ntb (HINT for anybody who will need this - enable Compatibility for the "batchproduct.exe", WXP SP2 mode works great) BUT ProductTool doesnt detect device :/
It seems that my "Actions USB 2.0 (HS) WinUSB Device" mode is not enough, so i tried to install proper ADFU driver and it works. BUT

- what i should do now?
First step (flashing FW by Player upgrade tool) now doesnt works - so do i have to try anything else?
Product Tool detects player, but button "Erase flash" is disabled.
I really dont want to kill it completely