Hi Matsunaga-san,
I suppose you need to program the KL25Z board with the attached PF3000_HID_GUI_KLZ25Z bin file.
Please connect the USB cable to the Open SDA connector of the board, the board should be detected by the computer as a normal USB disk, just drag and drop the PF3000_HID_GUI_KLZ25Z.bin file into the FRDM-KL25Z “USB disk”.
Then, unplug the USB cable, connect the KITPF3000FRDMPGM board on top of the FRDM- KL25Z and connect the USB cable into the KL25Z_USB connector (different from the Open SDA connector).
Then open the PF3000_HID_GUI and click on enable target check box and it should be ready to work.
Hope it helps!
Best regards,
Tomas
PS: If my answer helps to solve your question, please mark it as "Correct" or “Helpful”. Thank you.