You can now download Stagefright Android 5.1.1 LMY48I fix for Nexus 6, 5, 4 and Nexus 9, 10 to patch the critical Android vulnerability which can let hackers take over any device by simply sending a text message.
You can now download Android 5.1.1 Lollipop factory image for Nexus 6. We have the direct link for the download right here.