[How To] Update HTC One to Android 4.3 using Cyanogenmod 10.2 Custom ROM

Even though you might not be able to taste a stable version of KitKat, yet, on your HTC One, there is still a quite recent desert from Google waiting for you. The latest version of Android Jelly Bean, that is, Android 4.3 is available on HTC One from the custom ROMs giant CyanogenMod. And, yes, HTC One is officially supported by CyanogenMod team.

Though the status of the official builds say it’s in testing, reports have confirmed that it is a very stable build sans any bugs.

WARNING!

Warranty may be void of your device if you follow the procedures given on this page.

You only are responsible for your device. We won’t be liable if any damage occurs to your device and/or its components.

CHECK DEVICE MODEL NO.

To make sure your device is eligible with this, you must first confirm its model no. in ‘About device’ option under Settings. Another way to confirm model no. is by looking for it on the packaging box of your device. It must be HTC One M7UL! The procedure and the ROM itself is for all the variants of HTC One M7UL.

Do not use the procedures discussed here on any other device. You have been warned!

BEFORE YOU BEGIN..

You must do this pre-installation stuff before attempting to install the CyanogenMod 10.2 on your HTC One in order to avoid any complications later, and have a smooth and successful process.

BACK UP YOUR DEVICE

Back up important data and stuff before you start playing around here as there are chances you might lose your apps and app-data (app settings, game progress, etc.), and in rare case, files on the internal memory, too.

For help on Backup and Restore, check out our exclusive page on that linked right below.

► ANDROID BACK UP AND RESTORE GUIDE: APPS AND TIPS

CHARGE YOUR DEVICE

If your android device powers off due to lack of battery while the process is underway, it could damage the device.

So, make sure your device is adequately charged — at least 50% battery of the device.

EXAMPLE VIDEO

If you haven’t used a custom recovery, either CWM or TWRP, before, to install a .zip file of a ROM on anything else, then we suggest you first watch a video of that, given right below, to get familiar with the process.

Just fyi, the video below shows installing a .zip file (of recovery) on Galaxy S3, but it doesn’t matter as the process remains exactly same. So, once you are finished with video, jump to downloads and step-by-step guide below.

HTC ONE M7UL CYANOGENMODE 10.2 JELLY BEAN 4.3 INSTALLATION GUIDE

DOWNLOADS

Download the files given below and transfer them to a separate folder on your phone and remember the location.

CyanogenMod 10.2 ROM: DOWNLOAD LINK
File name: cm-10.2-20131109-NIGHTLY-m7ul.zip
File size: 184.01 MB
Google Apps (Gapps): DOWNLOAD LINK
File name: gapps-jb-20130813-signed.zip
File size: 87.48 MB

Reminder: Before you proceed, make sure you’ve transferred the files you downloaded above to a separate folder on your phone.

STEP-BY-STEP GUIDE

Make sure you have backed up your phone adequately (including important data stored on internal memory). Also create a nandroid backup using your recovery for additional safety.

You’ll need either CWM or TWRP recovery for installing the CyanogenMod 10.2 on your HTC One. And since CWM and TWRP recoveries function differently we’ve put together separate guides for both of them. So if you’re a CWM user, follow the CWM users guide and if you’re a TWRP user follow the guide for TWRP users.

GUIDE FOR CLOCKWORKMOD RECOVERY (CWM) USERS

Boot into recovery mode. For this:
- Power off your device and wait 4-5 seconds after lights go off
- Press and hold Volume Down button, then press the Power button to switch on your phone and release it, but keep holding the Volume Down button. Your phone will boot into Bootloader mode
- You’ll see a screen with options to boot into fastboot and recovery mode. Here, press Volume down once to navigate to RECOVERY, then press Power button to select it and boot into Recovery mode.
  └ In Bootloader and Recovery mode, use Volume buttons to navigate Up and Down between options and use Power button to select an option.
Create a Nandroid Backup from recovery. It’s optional but very important to do, so that in case something goes wrong you can restore to current status easily. For creating a nandroid backup, go to Backups and Restore » Backup.
Perform a Factory Reset (This will delete all apps and their settings and game progress). For this:
- Select Wipe data/Factory reset, then select Yes on the next screen to confirm factory reset (screenshot)
- Go to Mounts and Storage » Format System and then select Yes on the next screen to confirm.
- Go to Advanced » Wipe Dalvik Cache and then select Yes from the next screen to confirm.
Install the cm-10.2-20131109-NIGHTLY-m7ul.zip file first. For this:
- Select Install zip » Choose zip from sdcard (or external sdcard, you know where your files are) » browse to the location where you saved the file and select the cm-10.2-20131109-NIGHTLY-m7ul.zip » select Yes on next screen to confirm installation of the file.
Now go back to the main menu of CWM and select Reboot in System. When your phone boots up fully (it may take some time as it’s booting the ROM for the first time), go back to Recovery mode. Refer to Step 1 for this.
Now similarly flash the gapps-jb-20130813-signed.zip file, as you did in step 4.
After you are done with flashing of the file, go back to the main menu of recovery and select reboot system now.

That’s all. Your phone will now reboot into newly flashed CyanogenMod 10.2 Android 4.3.

GUIDE USING TWRP RECOVERY

Boot into recovery mode. For this:
- Power off your device and wait 4-5 seconds after lights go off
- Press and hold Volume Down button, then press the Power button to switch on your phone and release it, but keep holding the Volume Down button. Your phone will boot into Bootloader mode
- You’ll see a screen with options to boot into fastboot and recovery mode. Here, press Volume down once to navigate to RECOVERY, then press Power button to select it and boot into Recovery mode.
  └ In Bootloader and Recovery mode, use Volume buttons to navigate Up and Down between options and use Power button to select an option.
Create a Nandroid Backup from recovery. It’s optional but very important to do, so that in case something goes wrong you can restore to current status easily. For creating a nandroid backup, go to Backup and Swipe on the options Swipe to Confirm backup to start creating the Nandroid Backup.
Perform a Factory Reset (this will delete all apps and their settings and game progress). For this:
- Tap on Wipe » then at the bottom of the screen do a Swipe on the ‘Swipe to factory reset‘ option (screenshot)
First Install the ROM file – cm-10.2-20131109-NIGHTLY-m7ul.zip:
- Tap on Install » browse to the location where you saved the files and tap on the cm-10.2-20131109-NIGHTLY-m7ul.zip file. Now at the bottom of the screen, do a swipe on the Swipe to confirm flash option to begin flashing.
Now go back to the main menu of TWRP and select Reboot » System to reboot into system. When your phone boots up fully (it may take some time as it’s booting the ROM for the first time), go back to Recovery mode. Refer to Step 1 for this.
Now similarly flash the gapps-jb-20130813-signed.zip file as you did in step 4.
After you are done with flashing of the file, go back to the main menu of recovery and select Reboot » System to reboot into System.