Hello,
K40 has not any bootloader, out of reset executes out of internal flash. You have the OSJTAG to program the device using CW, IAR, Keil,...
Regarding bootloaders for Kinetis:
AN4367 : Ethernet Bootloader for MCU (pdf)| AN4367SW |
This document explains how to modify the .lcf and .icf link files of CodeWarrior and IAR IDEs respectively, in order to...
AN4370 : USB DFU Bootloader for MCUs (pdf)| AN4370SW |
This document demonstrates how DFU fits in an embedded device and gives examples of implementation using a PC with...
AN4368 : USB Mass Storage Device Host Bootloader (pdf)| AN4368SW |
Bootloader is a small program put into a device that allows user application codes to be programmed to the...
AN4379 : Freescale USB Mass Storage Device Bootloader (pdf)| AN4379SW |
This application note describes a mass storage device (MSD) USB bootloader that has been written to work with...
Cehck also AN2295, serial bootloader:
https://community.freescale.com/message/97604#97604
Best Regards,
Luis