Nexus 5 is powered by a powerful Qualcomm Snapdragon 2.3GHz quad-core processor, 2GB of RAM and an Adreno 330 GPU. The 4.95″ True HD IPS Plus display has a resolution of 1080 x 1920, with a pixel density of 445 ppi. Storage comes in at either 16GB or 32GB. Other features include an 8MP camera, LTE connectivity and a 2300mAh battery.
Previously, we saw how to update Nexus 4 to Android 5.1.1 via the factory image. Similarly you can update the Nexus 5 also. OTA will be available in a few days, but the advantage of Nexus device is the factory image which can be used to install the official update before the OTA arrives. Follow the guide below to install Android 5.1.1 on Nexus 5.