Root LG E450

Actually this method can be apply with lg e460 too.

1) Download SuperSU from the android market
2) Grant Permission for SuperSU to work ( Press the left button on the chinese dialogue )
3) When prompted to update the SU binary, tap on Update
4) Once Update is over, swipe to the Settings tab and select, "Install SuperSU in /system" , option.
5) After Phone restarts, you will find the Chinese SuperUser is not present, but the SuperSU is present.
6) now execute the following command in your terminal or command prompt

---------- For Windows Users ---------------

adb.exe shell "su -c 'mount -o remount,rw /system'"

adb.exe shell "su -c 'rm /system/bin/su'"

adb.exe shell "su -c 'rm /system/xbin/su'"

------------- For Mac/Linux Users ------------

adb shell "su -c 'mount -o remount,rw /system'"

adb shell "su -c 'rm /system/bin/su'"

adb shell "su -c 'rm /system/xbin/su'"

7) Now Open SuperSU and once again update SU Binary.

Thanks to subho007

LG E450 Specification

GENERAL	2G Network	GSM 850 / 900 / 1800 / 1900
	3G Network	HSDPA 900 / 2100
	SIM	Yes
	Announced	2013, February
	Status	Available. Released 2013, April

BODY	Dimensions	117.5 x 62.2 x 9.2 mm (4.63 x 2.45 x 0.36 in)
	Weight	103.3 g (3.63 oz)

DISPLAY	Type	IPS LCD capacitive touchscreen, 16M colors
	Size	480 x 800 pixels, 4.0 inches (~233 ppi pixel density)
	Multitouch	Yes

SOUND	Alert types	Vibration, MP3 ringtones
	Loudspeaker	Yes
	3.5mm jack	Yes

MEMORY	Card slot	microSD, up to 32 GB
	Internal	4 GB (1.4 GB user available), 512 MB RAM

DATA	GPRS	Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps
	EDGE	Class 12
	Speed	HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps
	WLAN	Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi hotspot
	Bluetooth	Yes, v3.0 with A2DP
	NFC	Yes
	USB	Yes, microUSB v2.0

CAMERA	Primary	5 MP, 2560x1920 pixels, autofocus, LED flash
	Features	Geo-tagging
	Video	Yes, VGA@30fps
	Secondary	No

FEATURES	OS	Android OS, v4.1.2 (Jelly Bean)
	Chipset	Mediatek MT6575
	CPU	1 GHz Cortex-A9
	GPU	PowerVR SGX531
	Sensors	Accelerometer, proximity, compass
	Messaging	SMS (threaded view), MMS, Email, Push Email, IM
	Browser	HTML5
	Radio	FM radio with RDS
	GPS	Yes, with A-GPS support
	Java	Yes, via Java MIDP emulator
	Colors	Indigo Black, White, Pink, Titan
		- SNS integration - MP4/H.264/H.263/WMV player - MP3/WAV/WMA/eAAC+ player - Google Search, Maps, Gmail - YouTube, Google Talk - Document viewer - Organizer - Voice memo/dial - Predictive text input

BATTERY		Li-Ion 1700 mAh battery
	Stand-by	Up to 550 h (2G) / Up to 550 h (3G)
	Talk time	Up to 10 h (2G) / Up to 9 h (3G)