Android 4.4.2 KitKat CMB ROM For AT&T LG G2 D800–How To

It’s time to update your AT&T LG G2 D800 to latest, customized and black themed Android 4.4.2 KitKat with the help of custom firmware CMB RC2. Google recently introduced Android 4.4.2 KitKat on many Nexus models but that build is not much customized that’s why many preferring custom ROM on their Nexus as well as non-Nexus devices. CMB RC2 is based on latest Android 4.4.2 KitKat and build using CM11 source. The key feature of CMB RC2 custom firmware is, customized Dark Holo Theme With Gray ActionBars, dark Mms with Gray ActionBars, Dark Calendar, Dark Contacts, Dark Dialer with Gray AB's and custom call log, Ramdisk security tweaks, you can adb as root now, Bash "tab to complete" and remount helper in adb shell. The official CMB RC2 custom ROM is now support AT&T LG G2 D800. You can download and install custom firmware CMB RC2 on your AT&T LG G2 D800. Since, AT&T LG G2 D800 is capable enough to run Android 4.4.2 KitKat smoothly, CMB RC2 going to be a great experience for you. To learn how to flash this ROM, continue reading this guide to know how to install Android 4.4.2 KitKat based CMB RC2 custom ROM on AT&T LG G2 D800.

Related Readings:

Some of the cool Android 4.4.2 KitKat features that you will enjoy is Screen Recording, Tap to Pay (Google Wallet for everyone), NFC emulation for non nfc devices, 14% less memory usage, cloud printing from Gallery, Google Home is the new Launcher, Core System Processes Trimmed, apps are efficient and responsive on all devices, the all new 'procstats tool details' memory use, Full-screen Immersive mode, seamless change in resolution during media playback, Phone dialer got local business detection, redesigned Quickoffice and many more.

As said already, this is a test build and you should expect some bugs in it. All bugs and issues expected to be fixed as development progress towards a better build.



This tutorial is only for AT&T LG G2 D800. Don’t try this guide on any other Android device. Also, we are not responsible for any damage caused due to the instruction given in this page. Try this at your own risk. However, it is very unlikely that your device will be damaged if you follow all the instructions as it is which are mentioned in procedure.  

Pre Requisites:

1. Backup your device data. You can follow our ultimate backup guide.

2.  Make sure your device have at least 60% battery power. You can install an app like Battery Notifier BT Free on your Android device to check it easily.

3. You already have USB Driver Installed for AT&T LG G2 D800 in your PC. [Download USB Drivers]

4. Make sure USB Debugging is enabled otherwise you won’t able to transfer file between PC and AT&T LG G2 D800. [Guide].

5. Your device have latest CWM version and up or TWRP and up installed. [Guide]

6. Your device must be rooted.

If you done everything that we mentioned above then you are ready to follow step-by-step guide on how to install Android 4.4.2 KitKat based CMB RC2 ROM on AT&T LG G2 D800.

File Required(Download by clicking on it)

  1. CMB RC2 For AT&T LG G2 D800  [Filename:]
  2. Google Apps [Filename:]

How to Install Android 4.4.2 KitKat based CMB RC2 ROM on AT&T LG G2 D800

  1. Connect your device to PC using USB cable and then copy downloaded files to the SD card of your device. Important: Don’t extract any files.
  2. Disconnect USB and then turn off your AT&T LG G2 D800.
  3. Now, Boot into recovery mode. To do so, press and hold Volume down & Power, when the LG logo appears release and press them again, then press the Power button three times. In recovery use Volume Keys to navigate between option and Power or Home Key to select an option. Alternatively try this: Recovery Mode without Key Combination.
  4. Perform a Nandroid backup of your existing ROM that you can restore later if this new ROM not work or you want to go back into your previous ROM. To perform a backup, select Backup and Restore, then on the next screen, select Backup again. Go back to main recovery menu after backup is complete.
  5. Now, perform data wiping task. To do so, select wipe data/factory reset, then select Yes on next screen to confirm your action. Wait few minutes till the data wipe is complete. Now come back to CWM recovery main menu. Select wipe cache partition and after wiping process done, select Wipe Dalvik Cache under advance option to perform Dalvik cache wiping.
  6. Select install zip from sdcard, then select choose zip from sdcard. Now, locate the CMB RC2 Zip file that you copied earlier in Step 1 and select it by pressing Power button. Confirm installation by selecting Yes – Install on the next screen. The ROM installation will begin.
  7. Once the ROM installation process end, repeat the step 6 but choose the file instead of ROM zip to install the Google apps package.
  8. When installation is completed, go back to the main recovery menu and select reboot system now to reboot your AT&T LG G2 D800 and boot up into Android 4.4.2 KitKat ROM CMB RC2
  9. Returning to Previous ROM: To go back to your previous ROM, boot into recovery, select backup and restore then restore your previous ROM by selecting it from the list.

Congrats! Android 4.4.2 KitKat firmware based custom ROM CMB RC2 is now installed and running on your AT&T LG G2 D800. [Note: Root is turned off by default in CM derived ROMs, you must enable developer settings first (tap the build number 8 times under about device), then enable root under Developer Settings]