Google officially rolls out Android 5.1.1 lollipop update for Nexus 5 smartphone users in India. This software update is now available for download via OTA. The download file size will be in 24.1 MB only. The firmware update will include bug fixing and mobile performance enhancement. It will not add any new features to Nexus 5 phone. The build number of Android 5.1.1 lollipop is LMY48B. For manual software update checking go to Settings > About > System Updates.

Refer: Full Specifications of Google Nexus 5