How to Install Android L on Google Nexus 5
In this video i will show u how to Install Android L developer preview on Google Nexus 5
Tools u need :
Nexus 5 Adb usb driver - http://developer.android.com/sdk/win-usb.html
or
http://forum.xda-developers.com/showthread.php?t=2588979
Adb Fastboot - https://www.dropbox.com/s/cxzeb5rrbp8oo4i/ADB%20and%20Fastboot.rar
Nexus 5 Android L Rom - http://storage.googleapis.com/androiddevelopers/preview/hammerhead-lpv79-preview-ac1d8a8e.tgz
Winrar - http://www.rarlab.com/download.htm
Instructions - Download the rom and extract it via Winrar then u will get a folder where u will see 6 android factory image files, follow the video on how to flash Android L on Nexus 5
Bootloader should be unlocked in order to flash this rom
if your bootloader is locked then unlock it by this command
fastboot oem unlock
write this command on fastboot inorder to unlock your bootloader