August security update is pushed out for the unlocked HTC One A9, HTC 10
As we said, the updates are for the unlocked variants of those two models. According to Global Executive VP Jason McKenzie, sending out these updates for carrier versions of HTC handsets is "unrealistic" considering the time it takes the wireless operators to test the update and approve it.
If you're rockin' the unlocked HTC One A9 or HTC 10, keep your eyes peeled for notification that your phone has received the update. Once you do, make sure that you are on a Wi-Fi network before starting the updating process. You should also make sure that your battery is fully charged before you begin to download and install the security update. And if it doesn't reach your phone in the next few days, don't panic. They are sent out on a staggered basis which means it might take several days to reach your device.