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 installĀ GM Tech 2 software onĀ 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:
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