I have received FRDM-K66F boards two days ago.
I was running the standard demo program "power_mode_switch_frdmk66" to set the board in high speed mode.
Suddenly, the board enter in "bootloader" mode ...
To go back in JLINK mode, I load the "OpenSDA_V2_1;bin file, and the operation probably failed because since this
time, the board does not seem to be power connected.
When, I connect the board to a PC using the micro-USB cable no LED is illuminated.
Do you thing the board is broken or where the problem could come from ?
Thanks for your support.