更新

gēngxīn
  1. to replace the old with new
  2. to renew
  3. to renovate
  4. to upgrade
  5. to update
  6. to regenerate

CEDICT

Entry Composition

1 更 gēng
  1. to change or replace
  2. to experience
  3. one of the five two-hour periods into which the night was formerly divided
  4. watch (e.g. of a sentry or guard)
2 新 xīn
  1. new
  2. newly
  3. meso- (chemistry)