The CyanogenMod, or CM, 10.2 custom ROM based on the new Android 4.3 Jelly Bean firmware was recently released for the HTC (TPE:2498) One.

And, although the official firmware update for the smartphone is still quite some time away, users of the handset can now update their device to the latest Android version by installing the custom firmware build.

The CM10.2 is a customized, aftermarket firmware build based on the Android Open Source Project. The firmware is designed to enhance the performance of the official Android ROMs, which are released by smartphone vendors and carriers.

Users should note that being an unofficial version, the CM10.2 requires a custom recovery like ClockWorkMod installed in the handset in order to flash the ROM zip file. Users should also keep in mind that the bootloader of the HTC One must be unlocked to install the custom ROM.

Here’s a tutorial on how to install CM10.2 Android 4.3 Jelly Bean custom ROM on the HTC One. But before going ahead, there are certain important aspects to be aware of:

- As CM10.2 is a nightly build, users may encounter some bugs. However, reinstalling an official stock firmware can help fix these issues.

- Users must have proper backups of their data, saved in the device.

- The device should be fully charged.

- The USB Driver for the HTC One, which will be used in the installation procedure, must be installed on the computer.

- Users should ensure that USB Debugging is enabled on the phone.

- The handset must be rooted and have a custom recovery installed.

- The installation process, explained here, is meant for the AT&T HTC One only. Users should not try this in any other variants of the phone.

- Users should make sure that Android Debug Bridge and Fastboot is configured on the computer. For more information, click here.

Note: International Business Times cannot be held responsible if anything goes wrong. Users should proceed at their own risk.

Step 1: Download CM10.2 Android 4.3 Jelly Bean custom ROM for the AT&T HTC One and extract boot.img from the zip file.

Step 2: Download Google Apps.

Step 3: Connect the HTC One to the computer via USB.

Step 4: Copy all downloaded zip files to the SD card of your phone. But do not extract any files.

Step 5: Disconnect USB and switch off the phone.

Step 6: Get into the Bootloader/Fastboot Mode. To do this, switch on the phone while pressing the Volume Down and Power buttons together.

Step 7: Now go to android-sdk-windowsplatform-tools directory on your computer and open Command Prompt.

Step 8: Type the following command and press Enter.

fastboot flash boot boot.img

Step 9: Type the following command again and press Enter.

fastboot reboot

Step 10: Now, follow the navigation instructions on the screen. Select “BOOTLOADER” and then go to “RECOVERY.”

Step 11: Now, perform the data wiping task. To do so, select “wipe data/ factory reset,” then select Yes on next screen to confirm your action. After that, perform a cache wipe by selecting “wipe cache partition.”

Step 12: Now wipe dalvik cache. From CWM recovery, go to “Advanced Menu” and then select “wipe dalvik cache.”

Step 13: Go back to the main recovery screen and select “install zip from sdcard,” then select “choose zip from sdcard.”

Step 14: After that, locate the CM 10.2 Android 4.3 zip file and select it by pressing the Power button. Confirm the installation on the next screen. The ROM installation will now begin.

Step 15: Once the installation process ends, repeat the same step but with Google Apps zip file to install the apps package.

Step 16: Once the installation process gets completed, go back to the main recovery menu and select “reboot system now.”

The HTC One will boot up into the customized CM10.2 Android 4.3 Jelly Bean ROM.

[Source: Team Android]