Hi Hyunkee Noh,
Do you mean you erased the code which in the FRDM-KV31F which is out of factory? And you want to download it to the board again?
If yes, please download the FRDM-KV31 QSP at first:
FRDM-KV31F Quick Start Package
Then you can find the pre-complied code in folder:
FRDM-KV31F-QSP\FRDM-KV31F_QSP\Pre-Compiled Demo Code
You can send the .bin file to your FRDM board device is ok.
You also can refer to this link to get start:
FRDM-KV31F|Freedom Development Platform|Kinetis MCU|NXP
Wish it helps you!
If you still have question, please let me know!
Have a great day,
Kerry
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------
