Need for Speed Carbon was an early-cycle PS3 title. This leads to some unique performance characteristics when running the digital version:
To install PKG files that were not purchased from the official PlayStation Store, a console typically requires HEN (Homebrew Enabler) or CFW. Essential Tips for New Players need for speed carbon ps3 pkg
Most patches and downloadable content for PS3 games are delivered in PKG format. Why Players Seek the PKG Version Need for Speed Carbon was an early-cycle PS3 title