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Unofficial CyanogenMod 10 (CM10) for AT&T One X/XL Brings Jelly Bean, Android 4.1


AT&T may have refused to provide bootloader unlocking for their One X, but that hasn’t stopped custom development on the device from happening. In the latest development, an unofficial Android 4.1 based CM10 ROM has been released for the AT&T One X by XDA Recognized Developer h8rift, giving users of the device a chance to try out Jelly Bean with all its features.

NOTE: The ROM is a very early alpha build and hence is not to be considered suitable for everyday use, as it has a long list of issues and things that don’t work. Also, CM10 is in its early stages, so don’t expect most of the customization features of CyanogenMod to be present in the ROM at this point.

The list of things working/not working quoted from the developer (the most updated list can be obtained from the development page linked in the guide):


  • Touchscreen
  • Voice / Data
  • Audio
  • WiFi
  • NFC / Android Beam
  • App Switch button = Menu
  • Auto-Rotation
  • Auto-Brightness
  • Proximity sensor

Not working:

  • Video is kinda wonky. See YouTube for example.
  • Multi-touch (need kernel source)
  • Camera (not working at all)
  • Video Camera (not working at all)
  • Wifi Hotspot
  • USB Tethering
  • Bluetooth
  • Notification LED
  • Google Wallet (May not ever work. Very very low priority)
  • Wired Headset (and maybe Bluetooth Headset) does not work yet.

Continue reading to find out how CM10 can be installed on the AT&T One X.


This guide is applicable only for AT&T One X. DO NOT try this on any other device.


The methods and procedures discussed here are considered risky and you should not attempt anything if you don’t know completely what it is. If any damage occurs to your device, we won’t be held liable.

How to Install CM10 on AT&T One X/XL


  1. This procedure will wipe all your apps, data and settings (but it will NOT touch your SD cards, so don’t worry about those). Backup your Apps and important data — bookmarks, contacts, SMS, APNs (internet settings), etc. This Android backup guide would help you.
    NOTE: Don’t forget to at least make a backup of your APN settings, which you can restore later if your data connection does not work after installing the ROM. Use the backup guide to find out how.
  2. Make sure bootloader on your device is unlocked. Use the bootloader unlock method here to do so.
  3. Install ClockworkMod recovery on your phone by following the guide → here.
  4. Download the latest version of the ROM from the official development page.
  5. Download the Google Apps package. This will install apps like Market/Play Store, Gmail, etc. which are not present in the ROM.
    Download Gapps  |  Filename:
  6. Copy the 2 zip files downloaded in steps 4 and 5 to the SD card on the phone (do not extract them).
  7. Switch off the phone. Boot into the bootloader mode first by holding the Volume Down button while powering on the phone. Then, using the volume buttons, highlight RECOVERY then select it using the power button to boot into CWM recovery.
    Use volume buttons to scroll up and down and the power button to select options in recovery.
  8. Select wipe data/factory reset, then select Yes on next screen to confirm. Wait a while till the data wipe is complete.
  9. Then, select install zip from sdcard, then select choose zip from sdcard. Scroll to the ROM file on the sdcard and select it. Confirm installation by selecting Yes – Install on the next screen. The ROM will start installing.
  10. After the installation is complete, select Go back then select reboot system now to reboot the phone.
  11. Once the phone boots up, turn it off. Then, boot into recovery again using the procedure explained in step 7.
  12. Select install zip from sdcard, then select choose zip from sdcard. Scroll to the file on the sdcard and select it. Confirm installation by selecting Yes – Install on the next screen to install the Google apps package.
  13. After the installation is complete, select Go back then select reboot system now to reboot the phone. Once the phone boots up, you can connect to your Google account and access services such as Gmail, Play Store, etc.

CM10 based on Jelly Bean Android 4.1 is now installed and running on your AT&T One X. Visit the official development page for updates and more info. Share your thoughts on the ROM in the comments below.

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