The HTC One M9 may have only just appeared with Android 5.0.2, but it has already received some critical updates to fix its camera and heat issues at launch. Further Android updates for the M9 or the Android 5.1 update variety will be on their way shortly too so we'll keep you up to date on when you can expect the HTC One M9 Android update for your carrier.
Options: When updating your HTC One M9, you have a few options. You can wait for the over-the-air (OTA) update to be pushed to your device automatically, you can manually check for the update through your Settings menu *Settings > About > Software Updates > Check Now) or you can downloaded and manually install the update from your manufacturer's website or HTC itself. You'll get the same update in all cases, it just depends on how long you want to wait to get the update.
HTC One M9 Android 5.1 update
There's no word yet from HTC about when we can expect the Android 5.1 update for the one M9, but now that the camera and heat patch has rolled out to the major carriers we can assume HTC's devs are back to regular working hours and are focusing on getting Android 51 out within 90 days, as per HTC's standard approach. With Android 5.1 appearing in early March, that gives HTC until the end of June or early July to come good with 5.1 Lollipop.
HTC One M9 Android update in the US
AT&T HTC One M9 Android update
On April 21 AT&T announced it was pushing a patch for the AT&T HTC One M9 to address camera and heat issues along with the usual bug and performance fixes. The One M9 update brought the software up to version 1.32.502.31. If you want to take the manual update route, you can visit HTC's support page.
T-Mobile HTC One M9 Android update
T-Mobile announced on April 17 that the patch for camera and heat problems for the T-Mobile HTC One M9 would also be rolling out over-the-air (OTA). The T-Mobile HTC One M9 Android update went out in the following days, bringing the T-Mobile HTC One M9 software up to version 1.32.531.33. The update can also be downloaded manually from HTC's support page or accessed via your settings. You can find more details on T-Mobile's support page.
Sprint HTC One M9 Android update
Sprint was first out of the gate to update the problematic HTC One M9's heat and camera problems. The Sprint HTC One M9 Android update arrived on April 11 and pushed the software to version 1.32.651.30. You can download the update from HTC's support page if you want to flash the ROM yourself, or you can manually check for software updates in your settings or just wait for the OTA to arrive.