Vitit Kantabutra

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.

7 years, 8 months ago.

My MacBook Pro can't see the KL25Z board

I'm using a 2009-model MacBook Pro running El Capitan. First I went through the firmware update sequence, seemingly successfully. But when I powercycled the board, the Mac couldn't see the board at all. How do I fix the problem? Thanks.

2 Answers

Omar Harris
4 years, 6 months ago.

This is really a bad problem regarding MacBook. I want to add something with that. Once I was facing this problem and then after that my MacBook Pro Won’t Turn On and it's really a while to solve this problem. Just check your software update of the MacBook properly, if it's not properly updated then update it properly.

Erik -
7 years, 8 months ago.

Try doing the mbed firmware installation first time on a W7 or earlier PC. (Blame Freescale for that one, assuming that indeed fixes it).

Thanks, but it's already done (on the mac). So now what do I do?

posted by Vitit Kantabutra 04 Aug 2016

Do you see the drive under Windows? Which firmware did you use?

posted by Erik - 04 Aug 2016

Actually, I just connected the board to a Win7 PC, on which I'm typing right now. The PC doesn't even see the board at all! I tried plugging the Mini-USB fable into both ports on the board and neither one works. By the way I still don't understand the difference between the two ports. Which one is for programming?

posted by Vitit Kantabutra 05 Aug 2016

The one marked as SDA. The other one is connected directly to the KL25, and you can use it for example to emulate a mouse. If you hold the reset button while plugging it in a W7 PC, does it then see the bootloader?

posted by Erik - 06 Aug 2016