Root Nexus 5 On Android 4.4.2 Kitkat[GUIDE]

Google has just seeded a new update Android 4.4.2 kitkat comes with build version KOT49H. Google fixed major bugs in this update like Camera and SMS Deniel of Service vulnerabilities.So here i am going to Root Nexus 5 Android 4.4.2 build on KOT49H with CF-Auto-Root package.

Requirements:

1] USB Drivers for Nexus 5

 http://developer.android.com/sdk/win-usb.html

2] Guide to unlock bootloader of Nexus 5 Click Here

3] Android SDK tool 
http://developer.android.com/sdk/index.html

4]Fastboot 

https://rapidshare.com/download/998p3/125139521/ZmFzdGJvb3Qtd2luMzIuemlw/285/0/0/1:200/062DBC7695E166B4F3C2D4CE44B1635E/referer-4C83C8887C8B5F391184471138F5607E

5] CF-Auto-Root package for Nexus 5 Download

 http://download.chainfire.eu/363/CF-Root/CF-Auto-Root/CF-Auto-Root-hammerhead-hammerhead-nexus5.zip
Procedure:

1] Install USB drivers of Nexus 5 for transfer files from pc to phone
2] Enable USB debugging mode and go to setting > About phone and tap on Build Number several time until it says Now You Are A Developer.
3] Create a backup using any custom recovery like CWM.
4] Phone should have battery charge above 80%
5] The bootloader of Nexus 5 should be unlocked.Refers requirements for it.
6] CF-Auto-Root is working only on Android 4.4.2 kitkat build KOT49H.If your build number is different then dont use this method,it may be brick your device.
7] Download and install Android SDK tool from requirements and follow the all guide to set up it downloading platform tool and USB drive package in SDK.
8] Download the Fastboot from above and extract it to Android-sdk-windowsplatform-tools directory.
9] Download CF-Auto-Root package for Nexus 5 from above to root Nexus 5. 
10] Connect Nexus 5 to computer using USB cable And switch off your Nexus 5.
11] Go to the fastboot mode by pressing and holding Volume UP,Volume Down and Power button together until fastboot mode appears.
12]Extract the Downloaded file from step-7 on the computer and go to that extracted file location.
13]Now from CF-Auto-Root files in the flashboot directory do the following steps as per your computer OS.

Linux Users:

chmod +x root-linux.sh
Run root-linux.sh

Windows Users:

Run root-windows.bat

MAC users:

chmod +x root-mac.sh
Run root-mac.sh 

14]Wait until process is completed and follow the all onscreen instructions.
15]Once process is completed,phone takes approx. five minutes to first boot and download root checker from play-store to check the phone is rooted or not.
16]Now Nexus 5 rooted successfully.

Disclaimer:
Author Is Not Responsible For Any Kind of Damage To Your Phone And Illegal Use By Users.