update verb 1 to make something more modern or suitable for use now by adding new information or changing its design: an updated version of the software 2 to give someone the most recent information: We'll update you on this news story throughout the day. upgrade verb to improve the quality or usefulness of something, such as a machine or a computer program, or give a person a more important job or state that their job is more important than it was in the past: It's quite simple to upgrade the indexing software. Congratulations, I hear you've been upgraded to divisional manager.
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