Example: "The car couldn't make it up the rise"
Example: "I got an upgrade to first class when coach class was full"
Example: "The power plant received a new upgrade"
Example: "I've upgraded my computer so i can run better software"
Example: "John was kicked upstairs when a replacement was hired"
Example: "I upgraded to first class when coach class was overbooked"
Example: "The airline upgraded me when i arrived late and coach class was full"
Having had an upgrade; having been improved or enhanced.