upgrade problem sloved
i tried to upgrade the charger but once the process begin the program just disappeared on the screen and there was only blue screen on the display. So I tried the other computer using :
com 1 , 8 bit , no piority bit ,no hardware control, and 1.
the progrom started, and there was a progress bar. waited for 3 min.
It worked. So just make sure your setting is right.
before I used another computer, I called spintec.They answer it right away and I was told it will automatically switch to PC mode and this mode is hardware portected.