right now I got working everything, last night I connect the uTracker with the GSM and CAT-M1 networks, unfortunately the NB-1 network are not available near to me so, nothing to do.

the next step is write the application layer of the firmware, I don't really know how needs to work, I think the uTracker needs to have the feature to store data into the flash memory so I start for that.

GNSS is working perfectly!