My K64 has been locked

[zhuhuaitao]

Once I set frdm-k64f IO PTA0 and PA1 as Ftm, when find it working wrong I reload codes by CMSIS-DAP.

But it give me this.

I have tried use Jlink,but it doesn't work as well.

And i have try some ways to reflsh k64.

unfortunately,I think i make it worse and worse.

what can i do to save my frdm-k64f?

[Carlos_Mendoza]

Hi Zhu,

Have you tried using the P&E recovery utility? Take a look to the following post created by our colleague Erich Styger, it explains how to use it to recover your boards:

Bricking and Recovering FRDM-KL25Z Boards: Reset, SWD Clock and Low Power | MCU on Eclipse

Please notice that you will need an external probe like a Multilink.

Hope it helps!

Best Regards,

Carlos Mendoza

Technical Support Engineer

[zhuhuaitao · Accepted solution]

thanks for your help.

I have solved this problem by this card:

Kinetis Lock原因的调研及解决方案

thanks again.