There are two types of RUU files: EXE and ZIP. EXE files are executable programs that can be run on a Windows computer. ZIP files are compressed archives that contain the ROM image and other files. ZIP files can be flashed directly from the phone's bootloader, without using a computer. This method is also known as FUU (Fastboot Update Utility).
In this article, we will show you how to use the RUU ZIP method to flash the stock ROM on your HTC One X. This method is suitable for users who have an unlocked bootloader and a custom recovery installed on their device. If you have a locked bootloader or a stock recovery, you will need to use the RUU EXE method instead.
Prerequisites
A HTC One X device with an unlocked bootloader and a custom recovery installed. You can check your bootloader status by booting into fastboot mode and looking at the top of the screen. You can unlock your bootloader using the official HTCDev website. You can install a custom recovery using a tool like TWRP Manager or Flashify.
A RUU ZIP file that matches your device model and CID (Carrier ID). You can find the RUU ZIP files for various HTC One X variants on websites like XDA Developers or Android File Host. Make sure you download the correct file for your device, otherwise you might brick it. You can check your device model and CID by booting into fastboot mode and typing "fastboot getvar all" in a command prompt.
A fully charged battery or a reliable power source.
A backup of your important data, such as contacts, messages, photos, etc. Flashing the RUU ZIP will wipe your internal storage, so make sure you have a copy of everything you need.
Steps
Copy the RUU ZIP file to the root of your external SD card. Do not rename or extract the file.
Power off your device and boot into fastboot mode by holding the Volume Down and Power buttons together.
Use the Volume buttons to navigate to the "Bootloader" option and press the Power button to select it.
Use the Volume buttons to navigate to the "Recovery" option and press the Power button to select it.
Your device will boot into the custom recovery mode. Tap on "Install" and locate the RUU ZIP file on your SD card. Swipe to confirm the flash.
The flashing process will begin and may take several minutes. Do not interrupt or disconnect your device during this process.
Once the flashing is done, tap on "Reboot System". Your device will reboot and show a green progress bar. This may also take several minutes. Do not interrupt or disconnect your device during this process.
When the progress bar is complete, your device will boot into the stock ROM. You may need to set up your device again as if it was new.
Conclusion
Congratulations! You have successfully flashed the stock ROM on your HTC One X using the RUU ZIP method. You can now enjoy the original features and performance of your device. If you encounter any problems or have any questions, feel free to leave a comment below.
0493d141df