Well you could hit the "check for updates"
Sent from my HTC One XL using XDA Premium 4 mobile app
Unfortunately, that doesn't really mean anything. Folks have had issues checking for updates, when an update is known to exist. And no RUUs exist yet for Android 4.2.2/Sense 5, so you cannot update manually by RUU (which would be the sure solution). Some folks have had success with doing a factory reset (somehow makes the update come through) but its not guaranteed by any means. Or you can try to download the flash the OTA manually with stock recovery (not personally knowledgeable about the process).