Nitin 
Hi, I have to install Wince in Tiny6410. I am able to prepare the SD card as per the document but when board is powered on it asks for OS selection and then "Enter". Here comes the major issue. According to display menu on LCD, I need to press button K7 to install whereas there are only 4 buttons on my board ( K1, K2, K3 and K4). Please help me