noun, noun or participle which takes 'suru', transitive verb
Used for improving or updating software, hardware, services, or status. Often used as a suru-verb.
OSを最新バージョンにアップグレードした。
I upgraded the OS to the latest version.
会員ランクをゴールドにアップグレードする。
I will upgrade my membership rank to gold.
Loanword from English 'upgrade', adopted into Japanese with the same meaning.