How to install Android Lollipop step-by-step guide

Google will make the Android 5.0 SDK available today, 17th October, so head to developer.android.com/preview to check if updated Nexus 5 and 7 images are available to download. This is how owners of these devices can get the latest build of Lollipop today instead of waiting for the over-the-air update in the "coming weeks". You can follow the instructions below which explain how to install Lollipop, but make sure you're downloading the 5.0 version and not the older Android L developer preview. We expect the new SDK to be available from around 5pm UK time. Don't forget, this method is not recommended for regular users: it will ERASE your device and you will lose ALL your data.