So you got a Freescale FRDM board? Nice, but unfortunately it comes with bad firmware which doesn’t work on Linux:
Fortunately Freescale/P&EMicro fixed the issue, as reported by this user:
Now you can just drag & drop files to it on Linux to get it running new firmware.
But if you are planning a more advanced/serious work with debugging and something like that, you need to upgrade its bootloader to CMSIS-DAP compatible:
Basically all you need to do is download the firmware (APNT_232.ZIP) from Keil, unplug USB from FRDM board, hold RESET button, plug USB again and when green LED start to blink release RESET button. Your computer will mount a BOOTLOADER label disk, then just copy CMSIS-DAP.S19 file to there, wait a little bit (30s up to 1min is ok), unplug and plug USB again the green LED will turn green and turn off after few seconds.
All done, you have a FRDM with CMSIS-DAP support on Linux, it will be compatible with future OpenOCD version and with Crossworks IDE which has support to Windows, Linux and Mac.