HTC One M9 DeveloperUnlocked Latest Firmware Free
Installation instructions
To download and install the update from the device, follow these steps below:
1. Follow the "Getting Started" steps above.
2. From the Home screen tap All apps , tap Settings .
3. Tap System updates .
4. Tap HTC software update .
5. Tap Check now .
6. Tap DOWNLOAD to download the update.
7. The status of the download can be checked in the Notifications pull down.
8. 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.
9. Tap OK to begin the first part of the update process to software version 3.35.617.12 .
WARNING: During the upgrade process the device will reboot multiple times and show software upgrade screens. Do not remove the AC charger or long-press the Power button as this might stop the update and your device may be rendered inoperable!
10. Device will reboot and begin installation. Users will not be able to use their device during the installation process (approximately 10 minutes).
11. The first system update is complete. Tap OK to continue.
12. Repeat the previous steps to complete the second part of the update process to software version3.35.617.12 .
13. After the second system update is complete, tap OK to continue.
14. For best performance, open Play Store and tap the Menu icon, then select My apps and ensure all installed apps are updated.
Performing the ROM Update:
1. Download and save the HTC One™ ROM update to your PC.
2. Connect your device to your PC via the supplied USB cable.
3. 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.
4. Once the device is properly recognized on the PC, locate the HTC One™ ROM Update that you downloaded. Double-click on the file to launch the system update wizard.
5. Follow all of the system update wizard instructions shown on your PC.
6. Once the update is complete, click Finish in the Wizard and the device will reboot.
7. Once the device reboots, the initial setup wizard will appear.
8. After the initial setup process is complete, open Play Store and tap the Menu icon, then select My appsand ensure all installed apps are updated.
9. 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.
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