upgrade
up-grade
verb
To improve something by adding newer, better, or more advanced features.
"We need to upgrade our computer system."
noun
An improved version of something, or the act of improving it.
"The software upgrade fixed many bugs."
Thesaurus
Synonyms: kick upstairs, promote, raise, advance, elevate, rise, ascent, acclivity, climb, rising slope
Antonyms: break, bump, declension, declination, decline, declivity, demote, descent, downgrade, downslope, fall, kick downstairs