I Appreciate you replicated my experiment, and for sure it will be helpful if you can figure out where the payload is wrong.

Let me know if i should provide more info.

Hi Paulo, I finally got to looking into this and I was able to replicate your experiment. I created the payloads with your scripts and tried to write the "file_name" one with my firmware code and I get the error. So the problem may be not with the TestPkg.c but the way payloads are generated. I'll try to dig deeper and compare with my code that works OK, and figure it out if you want.