To raise something to a higher standard, in particular to improve equipment or machinery by adding or replacing components. verb
The company decided to upgrade its computer systems to improve efficiency.
She upgraded her phone to the latest model to enjoy better features.
An improvement or enhancement to something, often referring to technology or machinery. noun
The software upgrade includes several new features and bug fixes.
After the upgrade, the car's performance was noticeably better.
A change to a better seat or class of service, especially in the context of travel. noun
He received an upgrade to first class on his flight.
The hotel offered a complimentary room upgrade due to the booking error.