I'll keep trying later today, but last attempt was using a clean install (I renamed atmosphere and bootloader folders and unzipped the contents of the zip files posted by impeeza). hekate_ipl.ini file I used was the one provided by his sigpatches.
I am completely lost with this issue.
These are the files I am using:
sigpatches
Atmosphere
Hekate (v3)
This afternoon I'll try again using this Atmosphere
https://github.com/Atmosphere-NX/Atmosphere/releases/tag/1.7.1
I am injecting fusee.bin or hekate.bin using Rekado. I will also try to inject them using another method to see what happens. But I am running out of ideas...
Thanks a lot.
EDIT: I am beginning to see the light at the end of the tunnel. Problem was related to rekado (the tool I use to inject the payload). For some reason it automatically downloaded a bad version of hekate.bin.
Injecting the last version of hekate (v3) with tegraRCMGui solved my problem. Sigpatches work perfectly (although I had to disable my exosphere.ini file, because it made my system to crash when connected to the net).
Sorry for bothering you with an issue that was obviously my fault.