Android 5.0 Lollipop was announced this week and people were anxious to know which devices will get official updates. Google has listed the devices which will get the official update and among those, Nexus 5 and Nexus 7 2013 (WiFi) will be the earliest ones to receive it. Before its OTA release, Android 5.0 Lollipop Preview System Images are now available to test the apps on Nexus 5 and Wi-Fi Nexus 7 2013. If you own these devices and want to try out the latest Android version, follow the instructions given below.


Disclaimer: Follow the instructions at your own risk. The writer cannot be held responsible for any bricked or unusable devices. Even though the chances of your Smartphone getting bricked are negligible, the owner of the device must take full responsibility of it!

Pre-requisites and Backing up your device:



  1. Make sure Android SDK, ADB and Fastboot files are present in the same folder.
  2. Download the system image file of your device and extract it to the folder in the above step.
  3. First you will need to unlock the bootloader.
  4. Switch off the device and reboot to fastboot mode.
  5. Connect the device to PC. Open the command prompt in the SDK folder and type the following command
    fastboot oem unlock
  6. Open a terminal and navigate to the unzipped system image directory.
  7. Execute the flash-all script which installs the necessary bootloader, baseband firmware, and operating system.
  8. Your device will reboot and you will see Android 5.0 Lollipop.
  9. If you want to lock the bootloader, follow steps 4 and 5 but this time enter the following command
    fastboot oem lock

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