oo wei

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11 years ago.

my FRDM-KL46Z can not work

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i copied the file "20140530_k20dx128_kl46z_if_opensda.s19" into bootloader disk,then plug it out and in . it can be recognised as a disk "MBED", but no virtual COM port, no CMSIS-DAP debug fuction. Just a "MBED" disk.. After i drag a app into "MBED" disk, it disappeared ,and appears 3 seconds later ,but the app does not work. please help me solve it

Question relating to:

Last updated: 30 Apr 2020

2 Answers

Miloje Zecevic
10 years, 10 months ago.

Hi Wei Meng,

I remember when I updated firmware of my mbed LPC1768, I had to install once again mbed Windows serial port driver. You can download it from https://developer.mbed.org/handbook/Windows-serial-configuration After that, when I plugged mbed, it was recognized as new USB peripheral and everything was working.

Regards, Miloje

Accepted Answer
Carlos Aguilar
10 years, 10 months ago.

I've had problems when loading the firmware too. After digging a little in the provider's site, it appeared that the problem was an incompability with Windows 8 in the previous firmware versions. The solution was to use an old computer with an XP windows OS and it worked!!!

Hope it can help.

I just encountered the same thing on Windows 10. Went back and used a windows XP computer and it worked fine. Once mbed is installed the windows 10 computer works OK so it is only when updating the mbed firmware that I have to use the old computer.

posted by Joseph Ellsworth 08 Mar 2016