Hello, Durga sivakrishna,
I think you're using the flashloader_loader project, it will be better to use the freedom_bootloader example. After you download the bootloader to your board you need to construct the application image or you can also use the one that is in the bootloader example:
If you use the first one your bootloader will be erased after the first update and in the second one, you could use again the bootloader. After compiling, create a binary from the axf:
In the following path from the NXP_Kinetis_Bootloader_2_0_0 you will find a tool called Kinetis Flash Tool:
NXP_Kinetis_Bootloader_2_0_0\bin\Tools\KinetisFlashTool\win
In this be sure that the COM is the correct one and in the image file section browse for the binary you previously create. If you use the image shifted to the 0xa000 you will need to put the Target Address at 0xa000 too.
Let me know if this helps you.
Best Regards,
Alexis Andalon
