I developed a firmware for FX2 . I tested it in a board with fx2 and spartan FPGA. It worked fine . Now I want to use the same firmware for another board. Iam using cypress driver. When I download the firmware, the device does not enumarate as cypress sample device , some times it is taking a long time to enumarate . When it does not enumarate either it goes as unknown device or it is not listed in the devices list .Can any one say what is the reason for this . I used the same PID and VID of the previous board . Can I use the same PID and VID.?