Cannot enable SPI on Jetson Nano emmc

Hello everyone, I surfed the internet and all the forum looking for solutions to enable SPI on Jetson Nano emmc production module but I didn’t find any tidy guide that works. I made many attempts but SPI still does not work. Unfortunately I know doesn’t work on this board. I hope in your support.

Have check below topic.

I tried several times to execute the various steps in the thread you indicated but I stole several hours of work and in the end I never had physical signals coming out of the SPI on the oscilloscope. It is very strange that there are no scripts from Nvidia for a production module or a simple guide that allows you to enable a pin in a short time. So please let me know if there is something acceptable because it is not possible to lose days of work to enable one pin.