Hi Rishav Kumar,
Would you please tell me which LED is blinking?
If you means the LED on FRDM-KL25Z, then please refer the: LED Status Indicator
If you are using Windows8/10, then please refer: Bricking and Recovering OpenSDA Boards in Windows 8 and 10
Best Regards,
Robin
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Hello Robin. Actually i have one KITPF3000FRDMEVM. In that when i am using the SDA port it's working perfectly but when i am using KL25Z USB port it's not working. That port is for connecting the PF3000GUI in the computer with the board but it is not scanning my device.