It might not be jumping to the part where the application it's located.,.
Could you please check the 3.Deploying Standalone Bootloader Firmware in the Kinetis Thread Stack and FSCI Bootloader Quick Start Guide User’s Guide?
Thank you, I solve my problem thank to your indications.
So, do you know how to merge 2 .bin files (bootloader and aplication image) with IAR system ?
I found on https://community.nxp.com/docs/DOC-328202 the solution with KDS but it is not so easy to do the same thing with IAR IDE