: The official Android Developers page detailing the API changes and technical features of the release. Firmware Source Code & Custom ROM Guides
Could you tell me the of your device? I can then help you find the correct firmware version and the specific tools needed (like Odin for Samsung or Flashtool for Sony) to install it. Download Lollipop Firmware via XperiFirm | PDF - Scribd android 5.0 lollipop firmware download
: Official open-source packages for Android 5.0 Lollipop firmware for various Lenovo tablets and smartphones, including the Lenovo A5000 and YOGA Tablet 2 . : The official Android Developers page detailing the