Updates & downloads

HTC One M9 Maintenance Release Instructions 4.12.2016
This HTC software upgrade available for your HTC One M9 provides the following key enhancements:
· Android 7.0 (Nougat)
· February 2017 Android Security Updates
Before you proceed, please confirm that this software upgrade to 4.27.651.4 is a newer version than what is currently loaded on your device. If it is the same version, there is no need to reload the software. Navigate to the Home screen then tap All apps > Settings > About and locate the Software version . If your Software number is less than 4.27.651.4 , you should proceed with the upgrade.
WARNING: During the upgrade process the device will reboot multiple times and show software upgrade screens. Do not remove the AC charger as this might stop the update and your device may be rendered inoperable!
Getting Started
Before you proceed with the update, make sure you have done the following:
· Set aside approximately 20 minutes to allow the device to update
· Connect the device to a charger
· Ensure the battery is charged to at least 35%
· If available, connect to Wi-Fi or 3G/4G LTE to speed up the update download process
Installation instructions
To download and install the update from the device, follow these steps below:
From the Home screen tap All apps , then tap Settings .
Tap System updates .
Tap HTC software update .
Tap Check now .
Tap DOWNLOAD to download the update.
If downloading the update using the mobile data network (not connected to Wi-Fi), you may be prompted with a data fee warning message. If this is acceptable, tap YES to start the upgrade process.
Status of the download can be checked in the Notifications pull down.
Once the download is complete, the user will be prompted to install from the Notifications pull down. Tap the System update to begin the upgrade process.
Tap OK to begin the first part of the update process to software version 4.27.651.4 .
Tap OK to continue.
For best performance, open Play Store and tap the Menu icon, then select My apps and ensure all installed apps are updated.
Manual system update instructions:
If you are outside of Sprint/Wi-Fi coverage, or the update is not found, you may perform a manual system update via USB connection from a PC. This process requires that you download and install HTC Sync Manager first in order to get the proper drivers. If you do not have HTC Sync Manager installed already, you may download the software from http://www.htc.com/www/software/htc-sync-manager/ .
WARNING: Performing the system update manually will delete all information from the device. Ensure all information is backed up before proceeding. See the Help & How To section of this website for more information on backing up your device contents.
Performing the ROM Update:
Download and save the HTC One M9™ for Sprint ROM update to your PC.
Connect your device to your PC via the supplied USB cable.
If the device is not recognized by the PC, ensure you have HTC Sync Manager installed and then disconnect and reconnect the device from the USB cable.
Once the device is properly recognized on the PC, locate the HTC One M9™ for Sprint ROM update that you downloaded. Double-click on the file to launch the system update wizard.
Follow all of the system update wizard instructions shown on your PC.
Once the update is complete, click Finish in the Wizard and the device will reboot.
Once the device reboots, the initial setup wizard will appear.
Once the initial setup process is complete, open Play Store and tap the Menu icon, then select My apps and ensure all installed apps are updated.
After initial setup and updating all apps, the device is ready for use.
Note : If the ROM update wizard fails to recognize the device, close the wizard and then follow the steps below:
· From a powered off state, hold VOLUME DOWN while powering on the device to access download mode.
· Connect the device to the PC while in this state and attempt the ROM update again.
To exit download mode manually, use the volume keys to navigate to reboot and press the POWER button to select it.