Update AT&T HTC One to Android 4.3 Leaked Firmware

Android 4.3 Jelly Bean leaked firmware is now available download for AT&T HTC One. The leaked ROM is in RUU image which believe is the next android 4.3 OTA update firmware for AT&T HTC One. The RUU firmware has been compiled as flashable zip file for easier installation.The ROM is pre-rooted and pre-deodexed ROM but with pure leaked stock ROM firmware without any modification yet. This leaked ROM is only flashable for AT&T HTC One. The firmware version for this leaked Android 4.3 is 3.10.502.2.

3.10.502.2 Android 4.3 firmware is a custom recovery flashable ROM zip file with pre-rooted and pre-deodexed. However, you need to have your device pre-rooted and with custom Recovery (CWM or TWRP) pre-installed before flash the zip file, you can do it by following our guide here. The pre-rooted ROM come with SuperSU 1.6, Busybox, init.d support, read write permission on System and all AT&T Bloatware applications. Second method is for those who has not root or modify their HTC One yet to try update to Android 4.3 ROM. Big thanks to scrosler, who shared the modified and stock ROM, credits to him.


HTC One is HTC’s flagship device in 2013 with 1.7GHz quad core Qualcomm Snapdragon 600 processor and 2GB RAM. It is the second 4.7 inch full HD display (1920 x 1080p) device from HTC after HTC Butterfly. It comes with Android 4.1.2 Jelly Bean firmware and upgradable to Android 4.2.

Update AT&T HTC One to Android 4.3 Androidteen (1)Update AT&T HTC One to Android 4.3 Androidteen (2)Update AT&T HTC One to Android 4.3 Androidteen (1)

How To Update Android 4.3 on AT&T HTC One

Disclaimer: It’s always a risk to modify your device. We, Android Teen are not responsible for any damage or bricks on your device. Your device warranty may void with any mod. Check your devices warranty’s term & conditions before start.(HTC,Samsung,LG, Sony, Motorola). Use this guide on your own risk, contact us for help if you face problem.

Pre-requisites & Requirements

  1. AT&T HTC One (Ensure correct device model and firmware; Check device model – Go to Settings -> About Device -> Model Number)
  2. Windows-based computer or laptop
  3. Download HTC One USB driver for Windows and install in your computer.
  4. Connect device to computer with USB cable to complete installation.
  5. Skip this step if you have installed the USB driver.
  6. Enable USB Debugging on your device. How to Enable USB Debugging Mode on Android Devices.
  7. Make sure your phone is charged to 60% 80% to avoid battery blackout and interruption during this tutorial.
  8. We recommend you make a backup on your data and media files before the tutorial. You may restore the data and files if necessary.

Reminder: Installing Android 4.3 zip will not erase your data but we highly recommend you make a backup before proceed. If you proceed to unlock bootloader will erase everything inside your device. Besides that, ensure you meet the requirements before proceed. Contact us if you face problem.


  1. Custom Recovery flashable ROM zip (AT&T – Stock Root – De-Odex – 3.10.502.2.zip | 1.06GB) – Source


  1. Unlock bootloader, Install custom recovery and root your AT&T HTC One. Proceed further once you complete this step.
  2. Download AT&T – Stock Root – De-Odex – 3.10.502.2.zip and store in your device’s SD.
  3. Power off your device.
  4. Boot into recovery mode by pressing and hold Volume Down key and Power button. Wait the screen to be totally turn off then release power button with only Volume Down pressed.
  5. Navigate and select Recovery with Volume Up and Down button and use Power button to select.
  6. In the CWM recovery, perform a full Wipe Data/Factory Reset.
  7. Back to Recovery menu, perform Wipe Cache Partition and select Yes to confirm.
  8. Back to Recovery menu, perform Wipe Dalvik Cache and select Yes to confirm.
  9. Back to Recovery menu, select install zip from sdcard, then select choose zip from internal sdcard.
  10. Select AT&T – Stock Root – De-Odex – 3.10.502.2.zip and click Yes to install.
  11. Back to recovery menu, select reboot system now.
  12. Your device should be updated to Android 4.3 firmware now.
  13. Download root checker to check your root status OR open your applications drawer and you should see SuperSU is installed.

For those who encounter any issue, drop me message and we shall follow up to help you. LIKE us or give us a +1 if it works for you.

A 18 years old young android enthusiast who loves Android (Big fans of David Beckham too). He enjoys learning, testing and sharing on Android latest technologies. He likes to play around with custom ROM flashing, customize theme, discover new applications, system tweaking and more. Now, he owns Galaxy Note 2, HTC One, Nexus 7, Nokia Lumia 520 and iPhone 5.