Ralph S

Important changes to forums and questions

All forums and questions are now archived. To start a new conversation or read the latest updates go to forums.mbed.com.

8 years, 7 months ago.

FRDM-KL25Z & Windows 10 problem

Hello, I'm having trouble with the FRDM-KL25Z boards and Windows 10. The boards are detected via the SDA connector and is enumerated as a COM port but the connection is lost as soon as I try and download a program. The same applies when trying to update the firmware. I was able to borrow a computer with XP and the boards work ok, so the problem appears to be with Windows 10 and the SDA. Any ideas on how I can get the boards working under Windows 10?

I've installed the firmware so the board appears as mbed in file explorer on an old XP machine and it works fine on that machine. When I then plug the same board to the Windows 10 computer it also appears as mbed in file explorer but when I download a program the board dismounts. I've checked that DEP is disabled for everything except essential Windows programs and services (which can't be disabled as far as I can tell) Since posting my initial request for help I've obtained a fresh FRDM board and when I plug that into the Windows 10 computer is appears as FRDM-KL25Z in file explorer and works perfectly. It seems that downloading the mbed firmware is the source of the trouble! I can't prove this without restoring my non-working board with factory firmware. Can I download this from somewhere to confirm my suspicions? Also the fresh, working board no longer appears as a COM port in device manager, it is now shown under 'other devices' as 'PEMicro/Freescale - CDC Serial Port' with an exclamation mark (!) indicating the correct drivers have not been installed.

Any ideas on how to get my 2x non-working FRDM-KL25Z boards working under Windows?

Thanks, Ralph

Actually all of my 3x FRDM-KL25Z boards are now not working under Windows 10

posted by Ralph S 20 Apr 2016

2 Answers

Erfan Memar
7 years, 11 months ago.

Hi firstly u need to disable Storage Service in the services.msc then u need to follow this video: https://www.youtube.com/watch?v=PbWO_Jk9yqc

Accepted Answer

Hi Erich,

Thanks for providing the video it has helped me to use the KL25Z board under Windows 10! I hope many other people get their boards running under Windows 10 as well.

Thanks again, Ralph

posted by Ralph S 20 Apr 2017

Here is a blog about DAPLink and Windows 10. There is a lot of content that you'll find useful. https://os.mbed.com/blog/entry/DAPLink-bootloader-update/

posted by Sam Grove 19 Dec 2017
Dimitry Bresler
8 years, 7 months ago.

Hi Ralph S, It will sound funny but try reset your pc , i had once problem like this with my K64 , every time i will try to download a new program it will dismount in the middle of the download.

Try To Enter BOTLOADER mode and download again the firmware, If still nothing try re-installing your drivers

Hello Dimitry, thanks for your comments. Re-installing the Windows drivers helped for two out of the three boards so I suspect the third board has a hardware problem. Thank you for taking the time to reply to my question. Regards, Ralph

posted by Ralph S 22 Apr 2016