LG updated its flagship device LG G2 with latest Android 4.4.2 KitKat firmware, but that makes installing custom recovery a tough process. Without a custom recovery, Android geeks cannot use a flashable zip file (custom ROM, kernel, system apps, etc.) or make a nandroid backup of the system. However, this problem has also been solved out.
An XDA member Cloudyfa has made an app called AutoRec KitKat Recovery Installer, which makes it easy to install TWRP recovery on the LG G2. The tool supports all LG G2 variants and is quite simple use; however, your device must be rooted.
First root your LG G2 running on Android 4.4.2 KitKat (you can use ioroot25 for this). Once it is done, install the AutoRec app on the device and grant root permission.
Once installation completed, open the app and click on Flash Recovery option. That’s it! The TWRP recovery will be installed.
Important: Please note that, the AutoRec KitKat Recovery Installer downgrades your device’s KitKat bootloader and flash a custom recovery (here TWRP 2.7). Therefore, it is a risky job, so install the app at your own risk.