Download AT&T HTC One M7 Lollipop Update RUU 7.23.502.1

AT&T began rolling out the Lollipop update for HTC One M7 about a week ago. The update was pushed as an OTA in two separate parts. That roll out is now complete but for some reason if you weren’t able to take the OTA update on your AT&T One M7, then RUU for software number 7.23.502.1 is now available for you to download Lollipop right now on your device.

The 7.23.502.1 RUU comes with Android version 5.0.2. This isn’t the latest of Android right now since Google has already released Android 5.1 which contains a number of pretty little features and also significantly boosts performance. HTC has said that One M7 will receive the Android 5.1 update, but we aren’t sure if/when AT&T and carriers would make it available.

NOTE: If you’ve an unlocked bootloader with S-OFF, then you can install the RUU easily. However, if your One M7 has unlocked bootloader with S-ON, then you’ll have to re-lock the bootloader first to be able to install the RUU update.

 icon-download Download AT&T HTC One M7 Lollipop Update RUU 7.23.502.1


  1. Download the RUU on your PC from the download link above.
  2. Connect your HTC device to your PC via a USB cable.
  3. Make sure you’ve HTC One M7 drivers installed on your PC.
  4. Double-click/Run the RUU update 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.

Your AT&T HTC One M7 will now be running Lollipop with software number 7.23.502.1. Be extremely excited for this!

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Shivam is our resident designer and web developer who also enjoys writing. He loves to meditate, drive on the freeways and hunt for snipers during his Call Of Duty playtime. Email:
  • Andrés Fernando

    I can do if I have a rooted and s-off??

    • Yep, S-OFF and root would easily do.

      • prakash chandra

        I keep getting Error 155..i have a locked bootloader with S-On. unning android 4.3 with sense 5.0.. plzzzzzzz somebody help me out..i really want to get the lollipop update..

        • Error 155 occurs when you’ve an unlocked bootloader. Although you’re saying you’ve locked bootloader, I’d recommend you to lock it once again. Also, do check this link —

          • prakash chandra

            I have never really unlocked my bootloader. Always kept it in stock condition.i am attaching two screenshots.plz chk them and let me know what should i do.if i still need to relock bootloader plz let me know. your advice would be of great help.

          • prakash chandra

            Shivam plz help me out..!

          • Guest

            yo tengo el mismo problema!! si lo solucionaste te agradecería que me ayudaras!!

            I can't upgrade my @htc One M7 @ATT , help! @HTCUSA @xdadevelopers #Android 4.3 to 5.0 lollipop— Jenkins (@Jenkins_370) abril 21, 2015

          • Jaime Jenkins

            yo tengo el mismo problema!! si lo solucionaste te agradecería que me ayudaras!!
            i have the same problem, please help!!

  • MuAzWaLeEd

    error 170 pls help

  • MuAzWaLeEd

    one more question……….. should I install HTC Sync Manager ???

    • Ya you can try after installing Sync Manager. That would be good.

  • Saifi

    It not working????

  • gustavo

    I have been trying to install on my device which has 4.4.2 software version 4.18.502.7, but always get an image error, I have tried 4 different RUU, with different version, unlocked bootloader, but still same problem, contact htc support, they told this update is only for devices comming from 4.4.4, and 4.4.2 are not able to receive this update…

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