I bought new TWR-K22F120M tower board. it has MK22FN512VDC12 mcu. I am using blhost and Kinetis flash tool. while connecting in kinetis flash tool it is giving error. whether TWR-K22F120M comes with preprogrammed with boot loader? I also downloaded "NXP_Kinetis_Bootloader_2_0_0" . which is the closest target that I can select to port it to MK22FN512VDC12 mcu.