Upgrade HTC One X to Android 4.1.2 Jelly Bean via CyanogenMod

Brace yourself for lightning-fast web browsing, remarkable picture quality and seamless gaming visuals thanks to the powerful quad-core processor. You’ll love the minimalist design and the camera that captures every moment (even in low light) with crisp, vivid, beautiful photos. It also lets you take a photo while shooting HD video.
 

Disclaimer: All the tools, mods or ROMs mentioned below belong to their respective owners/developers. We,or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial 

CyanogenMod 10 (based on Android 4.1.2) Jelly Bean is still in nightly stage and will take several months before it gets matured enough to be released in a beta version. By installing this, you should remember that you may encounter lots of bugs in the ROM after installation.

Make sure you have installed all your USB drivers for the HTC One X to connect it with the computer. Apart from just the USB drivers, there are a few more things that you need to take care of.

1. You need to enable USB debugging mode. This helps to connect your Android phone with the PC.

2. Your phone battery should be 80-85% charged. If your phone goes off suddenly because of battery, during flashing ROMs or installing mods and updates — your phone might go dead permanently.

3. Backup all your important data that you might need as soon as your flash a new ROM, or make a backup for just in case, you never know when anything might go wrong.

Now, let’s proceed with the tutorial on the next page and update HTC One X to Android 4.1.2 Jelly Bean CM10 custom firmware.

We have put together a detailed step-by-step instructions guide on how to installCM10 Android 4.1.2 Jelly Bean ROM on HTC One X . Please read every line carefully below. We suggest, read the tutorial once before actually performing it on your phone.

To Remember:

• This CM10 Android 4.1.2 Jelly Bean ROM tutorial is only for HTC One X . Please don’t try this on any other variants of the phone.
• Make sure you backup all your data in your phone before proceeding.
• This is not an official HTC One X software update. This is a custom third-party ROM.
• Bootloader should be unlocked. 
• Make sure ClockworkMod Recovery is installed on your phone.

If you have fulfilled all the requirements above, then proceed to the actual tutorial.

Complete Step-By-Step Instructions:

Step 1 - Download CM10 Android 4.1.2 Jelly Bean ROM and Google Apps for HTC One X  to your computer.

Step 2 - Connect and mount your HTC One X USB (mass) memory on your computer using the USB cable.

Step 3 - Now copy/paste the downloaded CM10 ROM zip file and Google Apps file to your SD card. Make sure the files are in the SD card root (not in any folder).

Step 4 - Then turn OFF your phone.

Step 5 - Now to get in the Bootloader Mode. Turn ON the phone while pressing and holding the Volume Down + Power buttons.

Step 6 - Follow the navigation instructions on the screen. Select BOOTLOADER and then go to RECOVERY.

Step 7 - In ClockworkMod recovery, wipe data first. Then scroll down to “flash zip from SD card” and press the Power button to select it.

Step 8 - Press the Power button again and select “choose zip from sdcard”.

Step 9 -Now using your volume keys, navigate to CM10 ROM zip file and select it using the Power button. Confirm the installation on the next screen and theinstallation procedure should start now.

NOTE: Repeat the same step for the Google Apps file as well.

Step 10 - After the installation completes, go to “+++++Go Back” and reboot the phone by selecting “reboot system now” from the recovery menu. The phone will boot now and it might take about 5 minutes to boot on your first time. So, please wait.

That’s it! Your HTC One X should now have CM10 Android 4.1.2 Jelly Bean installed on your phone! Go to Settings >About phone to verify.

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Have fun playing with it! If you have any issues, please post them up in the comments below!