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HTC One A9 Firmware Flash File | RUU Android Nougat & Marshmallow

On this page, we will guide you on how to install the official firmware flash file on your HTC One A9 (codenamed HIAEUHL/HIAEUL). Well, HTC One A9 is based on Android 6.0 Marshmallow which is powered by the Qualcomm Snapdragon 617 processor. This guide will be helpful to unbrick or fix any software issues on your device.

To install the firmware flash file on HTC One A9, you need to download the software called QFil Flash tool. This method is simple and easy. We have also added video and step-by-step tutorials to make things easier to flash the firmware file.

Download Firmware File

All Firmware Files Here

How to Flash HTC One A9 Firmware File

Method 1:

1. Enable ‘USB debugging’ option from Settings –> Developer options –>. (To enable Developer Options, go to About phone and tap the Build Number 7 times.)

2. Download and Install ADB and fastboot driver for windows or ADB and Fastboot for Mac.

3. Extract the .Zip file

4. Copy the Extracted files to the folder where adb is installed.

5. Restart the HTC One A9 into recovery mode. by Connecting to your PC and execute the below command prompt ( Hold Shift + Right mouse click then Select Open Window from here)

adb reboot recovery

Or Manually reboot into recovery mode by following the below steps.

  • Switch off your device
  • Press and hold the Power + Volume Down buttons at the same time.
  • In download Mode, You can use Volume Up and Down keys to navigate and the power button to confirm.

6. In case you see any dead Android with an exclamation mark on the bottom and then click and hold the Power button and Volume Up buttons.

7. Now flash the ZIP file on HTC One A9 by executing the command below.

adb sideload file_name.zip

8. Wait until the process completes

9. Completed

Method 2:

1. Enable ‘USB debugging’ option from Settings –> Developer options –>. (To enable Developer Options, go to About phone and tap the Build Number 7 times.)

2. Download and Install ADB and fastboot driver for windows or ADB and Fastboot for Mac.

3. Extract the .Zip file

4. Restart the HTC One A9 into recovery mode. by Connecting to your PC and execute the below command prompt ( Hold Shift + Right mouse click then Select Open Window from here)

adb reboot recovery

Or Manually reboot into recovery mode by following below steps.

  • Switch off your device
  • Press and hold Power + Volume Down buttons at the same time.
  • In download Mode, You can use Volume Up and Down keys to navigate and power button to confirm.

5) Now from recovery Choose Install update from phone storage.

6) Now select OTA file and wait for the process to complete.

6) Done

Method 3:

  1. Boot your device into fastboot mode.
  2. On your computer, open the command window.
  3. Connect your device to the PC using a USB cable.
  4. In the command window, enter the following command to flash the RUU firmware
    fastboot oem rebootRUU
    htc_fastboot flash zip <file_name>.zip
  5. Wait for the “finished. Total time: xx sec” before doing anything. Then:
    fastboot reboot
  6. That’s it!

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