Google took a huge leap when it released Android 5.0 to the public and bought tons of new features and additions with it. It was released as a preview officially, for the Nexus 5 and the Nexus 7. The sole purpose of this preview was not only to showcase the upcoming Android version, but to build a stable version of Android, with the help of its users. This way, everybody could prove itself to be a part of it, which in its own way is a huge accomplishment.

Here at XDA Developers, are aiming in porting the same to our beloved Nexus 4. Since, the beginning of the trials, a lot of errors were tackled and resolved with pure dedication of both, us (developers) and the users. The teamwork has resulted in creating a near-perfect port for the Google Nexus 4, which is highly voted to be used as a daily driver.

After a long thought, XDA Developers have decided to split the project into two different parts. The first one is based off of Nexus 6 dump (LRX08) containing the complete N6 framework and apps (S-builds). The second one is based on the latest official Nexus 5 preview image. This is being done for a better user experience because some users prefer the N6 framework and apps, giving the latest Android Lollipop experience, and others like to follow a more close-to-google walkthrough given by the N5 preview image (P Builds).


Installation:
Since it’s a testing preview phase, it is advised to Clean flash every time you install a new update. While dirty flash and updating could also work depending upon the update to be flashed.
Before you proceed, read some real important flashing tips below:

First Time Installation:

Download the ROM and Other Optional files Here : http://idroidhorizon..com/2014/10/Update-Nexus-4-to-Android-5.0-Lollipop.html


Connect your Nexus 4 to the PC and transfer all the zips to the root of your device’s storage.


Reboot into recovery mode (Shut down, press Volume Down + Power buttons. In bootloader mode, select Recovery mode)

Wipe the following partitions: System, Data and Cache

Install the ROM zip file

Let it boot. Setup now and wait for the ROM to settle.

Reboot into Recovery again and Install the remaining zip file

Updating from previous version:

Download the ROM and Other Optional files above.
Connect your Nexus 4 to the PC and transfer all the zips to the root of your device’s storage.
Reboot into recovery mode (Shut down, press Volume Down + Power buttons. In bootloader mode, select Recovery mode)
Wipe the following partitions: Data and Cache
Install the ROM zip file
Reboot now
Let it boot. Setup now and wait for the ROM to settle.
Reboot into Recovery again and Install the remaining zip files.
- See more at: http://idroidhorizon..com/2014/10/Update-Nexus-4-to-Android-5.0-Lollipop.html