Upgrade

 the act of improving something (especially machinery) by raising it to a higher grade (as by adding or replacing components); hardware that provides better performance than an earlier version did; the property possessed by a slope or surface that rises; a reservation that is improved; software that provides better performance than an earlier version did; an upward slope or grade (as in a road);  to improve what was old or outdated; give better travel conditions to; get better travel conditions; rate higher; raise in value or esteem; give a promotion to or assign to a higher position

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