Have you ever wondered why some of your Passbook passes don’t show correct balances for your accounts? While passes in Passbook are supposed to update automatically, for whatever reason this doesn’t always seem to be the case. Fortunately, if you find that your balances are out of date on some of your passes, the good news is that you can refresh them manually.
Simply bring up the pass in Passbook and tap on the “i” in the lower right corner to view the “back” of the pass. At the top you should see a date or time when the pass was last updated; if it looks like it’s been a while, simply pull down on the pass to force a refresh. Passbook will go out and update the pass information, along with your balance — and the screen should show “Updated Just Now” at the top. Note that while all passes will show an “updated” date at the top, “static” passes that don’t include a refresh option will simply show the date that they were first installed, and pulling down won’t have any effect.