How to install tech2 software on VXDIAG VCX Nano for 2003 GMC Sierra diagnosis

One user has a 2003 GMC Sierra HD Diesel 2500 4×4 to test the airbag sensor. But has no idea how to install
Tech 2 software on VXDIAG VCX Nano to troubleshoot, and don’t know what files can help confirm what cables are compatible with the car.
Here attach 5 diagnosing images:





OBD2TOOLengineer solution: please watch this Youtube video on how to install tech2 software on VXDIAG VCX Nano