In the Kinetis Design Studio 3.2.0 Release Notes, section 2.4 under "Installing on Macintosh", the docs have this important looking note:
Currently only the Segger debugger works on MAC OSX. If you are using Freedom boards, ensure that you have the Segger OpenOCD firmware installed on the board which can be found on http://www.freescale.com/freedom and look for your particular freedom board’s getting started page.
The problem is that http://www.freescale.com/freedom redirects to http://www.nxp.com/products/software-and-tools/hardware-development-tools/freedom-development-boards:FREDEVPLA?tid=vanFREEDOM. From there, looking under the getting started page for the FRDM-KL27Z (http://www.nxp.com/products/software-and-tools/hardware-development-tools/freedom-development-boards/freedom-development-platform-for-kinetis-kl17-and-kl27-mcus:FRDM-KL27Z?tab=In-Depth_Tab), there's no mention of the Segger OpenOCD firmware.
But perhaps I don't need the Segger OpenOCD firmware after all? According to the BOOTLOADER:SDA_INFO.html file, the firmware in my FRDM-KL27Z is:
Board Name is: FRDM-KL27Z
MicroBoot Kernel Version is: 1.06
Bootloader Version is: 1.12
Installed Application: PEMicro FRDM-KL27Z Mass Storage/Debug App
Application Version is: 1.16
DUID is: 67833938-B7A081BF-37289815-BB4EE678
EUID is: 6F21A239-35BA874D-1827BA12-A15768D6
TUID is: 74823938-473281C6-376D2805-C47EE678
TOA is: 86B6E505-779E88F7-8290432F-5E7048F6
TOA2 is: 86B6E505-17D3C312-148656F0-9582F544
SUID is: 86B6E505-6E479E1C-37239804-8003EC65
Is this good enough for the Segger JLink? If not, where do I find a fresh bootloader?