Thanks again @world101 , solved. Ho I'm really bad looking for M5Stack documentation, or documentation is missing.
Best posts made by Carles B.
RE: ScanDisk Ultra microSDH card compatible with the M5Stack disk drive?
RE: Core 2 with Sim 800 module.
I agree with you. I bought a Fire and a Core2 with two Lora modules, in the Fire it fits perfectly and in the Core2 it does not. Now it will force me to buy another Fire if I want to use another type of module. I have not been able to use them.
I don't think it's a good policy, in the same brand, not to make everything compatible. This is my personal opinion