Hello there, madbhav.
It seems you were referred to us from the Knowledge Base article that provides the information you are looking for:
Pass not updating
If a pass isn't updating as expected, try the following:
- Ensure that you have an active Internet connection.
- Tap the info icon on the pass and check the last time it was updated.
- If it hasn't updated recently or if it doesn't appear to be correct, you can "pull to refresh" to update the pass.
- Turn on Automatic Updates.
- If it still doesn't update as expected, try quitting Passbook and opening it again. If the pass is still incorrect, check with the company or vendor that provided the pass.
Thanks for reaching out to Apple Support Communities.