Do you live in U.S ? owner of HTC ONE on sprint ? Then we have come with a good news for you that HTC executive M. Versi has confirmed that Sprint will be the first U.S. carrier to update its One to Android 4.4 KitKat. You were thinking that 9 days left then good news is what :). The good news is this that Android 4.4 and Sense 5.5 update for its HTC One is now available for manual pull announced by sprint in its official forum.
Software version is 4.06.651.4. This update is available only for customer initiated request. Network initiated roll-out will start in batches from 2/11/14.
The upgrade is available for download by Sprint customers, by accessing Settings -> About -> Software updates.Don’t freak out if you don’t see it there yet, just try again tomorrow and I’m sure it’ll be waiting for you.