Hi @mario_castaneda,
It is still failed to work with the bleota file.
I cannot see where goes wrong.
Here is my IoT tool version, which seems different from yours?

And I follow the process below:
- Programm the bootloader OTAP example
- Programm the OTA ATT example
- Pairing and Bonded with my Android smartphone
Note:
I am working with FRDM-KW36 SDK 2.2.9
Is there anything I missing?
Or an alternative can be implemented?
Thank you.