The term upgrade refers to the replacement of a product with a newer version of the same product. It is most often used in computing and consumer electronics, generally meaning a replacement of hardware, software or firmware with a newer or better version, in order to bring the system up to date or to improve its characteristics. Contrast update and replace. See also laptop upgrade.
Audiophiles use the word upgrade to describe the replacement of a product with a better-quality product with the aim of bringing enhancements to sound quality.
Read more about Upgrade: Computing and Consumer Electronics, Risks, Audiophile