How to Update HTC U12 Plus Smartphone with OTA Stock ROM [Flash File Firmware]

In this guide, we will tell you How to Update HTC U12 Plus Smartphone with OTA Stock ROM. If anyone is here who may want to install new firmware for upgrading purpose or may be rolling back from other firmware. We have linked up the firmware files and the basic installation guide as well. Check it out in the respective sections below. Originally, the firmware files and the process was provided by htc official website.
The HTC U12 Plus Smartphone features a 6.0" (15.24 cm) display with a screen resolution of 1440 x 2880 pixels and runs on Android v8.0 (Oreo) operating system. The device is powered by Octa core (2.8 GHz, Quad core, Kryo 385 + 1.8 GHz, Quad core, Kryo 385) processor paired with 6 GB of RAM. As far as the battery is concerned it has 3500 mAh. Over that, as far as the rear camera is concerned this mobile has a 12 UP + 16 MP camera.

Checking your system software version:
Before installing a system software update, you can check first what Android version you have on your phone.
  • From the Home screen, swipe up and then find and tap Settings.
  • Tap System > About phone > Software information.
  • Check under Android version.

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 60%
  • Connect to Wi-Fi to access and download the update

Instructions to Auto Update:
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, swipe up and then tap Settings .
  3. Tap System > About phone > Software updates .
  4. Tap Check now .
  5. Tap DOWNLOAD to download the update.
  6. The status of the download can be checked in the Notifications pull down.
  7. Once the download is complete, you will be prompted to install the new software from the Notifications pull down. Tap the notification to begin the upgrade process.
  8. Tap OK to begin the update process to software version 1.30.617.2 .
  9. The device will reboot and begin installation. You will not be able to use the device during the installation process (approximately 10 minutes).
  10. Once the system update is complete, tap OK to continue.
  11. For best performance, open Play Store and tap the Menu icon, then select My apps and ensure all installed apps are updated.

How to Manual system update instructions:
If you are outside of Wi-Fi coverage, or the update is not found, you may perform a manual system update via USB connection to 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

Download Stock ROM:

Steps to Manually Update OTA Stock ROM:
  1. Download and save the HTC U12+ Stock 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 U12+ 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 , tap the Menu icon, then select My apps and ensure all installed apps are updated.
  9. After initial setup and updating all apps, the device is ready for use.

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 Stock 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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