Use pkgutil (even without admin rights) to read the package’s information: upgrade-loader.pkg
Drivers that hook deep into IOKit may use a loader package to stage the new driver files while the old driver is still in use, then schedule a migration on the next reboot.
If you manage a fleet of Macs and a legitimate software vendor (e.g., your security stack) supplies upgrade-loader.pkg , follow these guidelines:
Using the wrong version for your specific hardware model can lead to permanent damage. Furthermore, it may solve boot issues but cause secondary problems, such as losing DRM certifications
The name upgrade-loader.pkg is highly descriptive. It combines two critical concepts: Use pkgutil (even without admin rights) to read
