Download & install Android 5.1 OTA Update on AT&T HTC One M9 Manually (Version 2.6.502.18)


After Verizon, another US carrier AT&T has rolled out Android 5.1 Lollipop firmware update with Stagefright fix for HTC One M9. The update has not brought new features except the fix for the Stagefright vulnerability & the OTA zip file will not take too long to download as it’s size is 55.5 MB and will be downloaded quickly. The firmware is live via OTA(Over The Air) and if you didn’t receive the OTA update notification yet don’t worry we have managed to grab the Android 5.1 Lollipop OTA for your AT&T HTC One M9, you can download the 2.6.502.18 OTA  update and install it on your HTC One M9 AT&T manually by following the below procedure.

If your device is running the unofficial firmware or Stock firmware with custom recovery in your HTC One M9 then you will not able to flash the OTA update in your device until you bring back your device to stock. The users with stock recovery should follow the below guide to update HTC One M9 to Android 5.1 Lollipop Stagefright security fix update.

How to install Android 5.1 Lollipop Stagefright security update on AT&T HTC One M9

Follow the below mentioned simple steps to install Android 5.1 Lollipop Stagefright security update on your AT&T HTC One M9.

Download the Android 5.1 Lollipop update for AT&T HTC One M9 (Name:

Size 55.5 MB

  • Connect your device to PC and transfer the file in your device internal storage and remember the location where you are putting the firmware file
  • Turn off your device and boot into recovery mode by hardware key combination or using third party application.
  • Once in recovery, choose the option apply update from SD-card & search for the firmware file and install it.
  • Wait for the installation process to complete, reboot the device once it completed

That’s it! Enjoy the latest Android 5.1 Lollipop update Stagefright fix update on AT&T HTC One M9. For any query feel free to contact us through below comment section and stay tune for future updates.

A Software Engineer who loves to hang around latest gadgets and writes his own experiences to get the best possible and accurate information.

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