I'm having lots of issues with KBOOT on a MKL27Z and OS X.
The problem is that sometimes it just doesn't seem to register properly on the host, and I can't figure out why.
I can see it appear as 'Kinetis Bootloader' for 1s, and then it disconnects. Sometimes this happens, but after a few tries it 'settles' and I'm able to flash. But today I've been trying for the past few hours, restarted my computer several times, but I just can't get it to connect properly.
Has anyone else seen an issue like this?