Download US Cellular Moto X XT1055 Android 5.1 OTA update with Stagefright fix included

Motorola has begun rolling out the Android 5.1 update for its 1st Gen Moto X over at US Cellular, and has already packed the Stagefright bug fix into the update. The biggie inside the OTA is Android 5.1 update, while new features are being touted too.

Battery life og your US Cellular Moto X should get a boost after the update, while there also new features in notification controls. Stagefright bug apart, there are other on-device security improvements added too.

The OTA update size varies from 200 to 400 MB depending on what build no. you currently have on your device. The download below is of 700 MB though, which you can use for manual installation.

But the good thing is, we have already got our hands on the Android 5.1 OTA update for your US Cellular Moto X 1st Gen, which you can use to install 5.1 update manually on your device with model no. XT1055. Here’s how you do it.

How to install Android 5.1 Update manually


  • 5.1 update — Link | File: (700.6 MB)

Supported devices

  • US CELLULAR MOTO X, 1st Gen, 2013 edition, model no. XT1055
  • Don’t try on any other Android device with a different model no.

Tip: Check the model no. in Settings > About phone. Or, you could also find the model no. on the packaging box of the device.

Warning: Warranty may be void of your device if you follow the procedures given on this page. You only are responsible for your device. We won’t be liable if any damage occurs to your device and/or its components.

Backup necessary stuffIn case your device is wiped off while following the guide below, it’s good to have a backup of contacts, photos, videos and other files already saved on PC.

Step-by-step Guide

  1. Download the official Moto X Android 5.1 OTA update from above.
  2. Connect your Moto X to PC using a USB cable.
  3. Now transfer the OTA update to phone’s storage. Remember the location of it.
  4. Boot your Moto X to recovery mode. (Make sure you have stock recovery, ant not a TWRP/CWM recovery.)
    1. Disconnect the phone from PC, and then Power off it.
    2. Press and hold both volume buttons with power button until you see anything on screen. This is bootloader mode.
    3. Now, use only volume down to move the selection to Recovery and then use volume up to select it and reboot into recovery mode.
    4. Wait, you’re not there yet. You’ll see a dead Android with exclamation mark. Just press and hold both volume buttons for around 5 seconds and while holding them, press power button once. You will see stock recovery and its options.
  5. In stock recovery, choose ‘install update from sdcard’.
  6. Now, select the OTA update file using volume buttons for navigation and power button to select a file or enter a folder. Once you select file, confirm its install and the update will start installing on your device.
  7. When done, you will be back to main screen of recovery. Select ‘reboot system now’ to restart your device and welcome the official Android 5.1 update from Motorola.

That’s it.

Need help? Let us know in comments section below.

Via  bestrafer

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  • Aamer Zahir

    it says “/system/app/PlayGames.apk” has unexpected contents. Installation aborted.
    I have restored to stock 4.4.2

  • Krishna

    That means that that particular APK wasn’t found by the OTA’s checker tool to be what it should be.
    Had you modified it? Did you have root access?
    You will have to install the Android 4.4 firmware first, and then install the 5.1 OTA. When OTA’s checker tool finds APKs as it is modified, it won’t give you that error. Only when it finds anything modified, it throws such error.

  • David

    I will need the link for Android 4.4 for moto xt1055 USC in oreder to get this download then cause all I have on my phone is CM.12

  • David

    I got this error. E: Zip signature verification failed. 1 Error Flashing zip /sdcard/
    Please help…

    • Krishna

      As you said in your earlier comment, did you install Android 4.4 back, removing the CM and TWRP/CWM recovery too?
      You will need that to install 4.4 firmware back first.

  • David

    I dont have the firmware that works for my device of android 4.4 I also don’t know how to delete CM completely. Could you provide a working link and instructions?

  • David

    I just recovered my phone to 4.4 stock and I just tried to flash android 5.1.5 and it said no md5 file found error

  • David

    I got the firmware for stock. Installed it did a factory reset and accepted the Motorola update but I keep getting the md5 verification error. Any tips?