Samsung Galaxy Nexus (GT-I9250) finally receives the highly-anticipated Android 5.0.1 Lollipop update, thanks to the release of Android Open Source Project (AOSP) ROM by the industrious custom Android developers.

In spite of being an ageing device, Galaxy Nexus is among the lucky few Android devices to enjoy stock-like Lollipop features with AOSP ROM, as Google is unlikely to support or release Android 5.0 update on these devices.

The new AOSP ROM brings pure stock-like Android experience to Galaxy Nexus in a stable release that can be used as a daily driver.

Interested users can go ahead and install the latest Android 5.0.1 Lollipop update via AOSP ROM, using the step-by-step guide given below.

Pre-requisites

The instructions provided in this guide are limited to Galaxy Nexus GT-I9250 and will not work with any other model. Verify your device model from Settings > About Phone

Ensure your phone has at least 80% battery charge to avoid inadvertent shutdown during the installation process

Make sure the correct USB drivers ( download here ) are installed for the phone on the computer

) are installed for the phone on the computer Enable USB debugging on your phone from Settings > Developer Options.

Ensure that your device is factory unlocked and rooted via CWM or TWRP recovery, before you proceed.

Downloads Required

Android 5.0.1 Lollipop AOSP ROM for Galaxy Nexus I9250

Google Apps

Steps toInstall Android 5.0.1 Lollipop Build LRX22C on Galaxy Nexus GT-I9250 via AOSP ROM

Step 1 - Download Android 5.0.1 AOSP ROM for Galaxy Nexus GT-I9250 on the computer

Step 2 - Connect and mount the phone's USB mass storage on computer with USB cable

Step 3 - Now, copy the downloaded AOSP ROM zip file to the root folder on the phone's SD card

Step 4 - Power off the phone and disconnect its USB cable from computer

Step 5 - Now boot the device into bootloader/fastboot Mode by pressing and holding Volume Up, Volume Down and Power buttons together. Tap Volume Down until the Start option at the top changes to Recovery mode and then hit Power button to reboot into Recovery mode.

Step 6 - Once the phone enters into CWM Recovery, perform a full data wipe task by clicking Wipe Data/Factory Reset. Use the Volume keys to navigate between options and Power button to select an option in the Recovery Mode

Step 7 - Then, perform Wipe Cache Partition and wait until the process completes

Step 8 - Now perform Wipe Dalvik Cache as well. To do this, go to 'advanced' option and then click Wipe Dalvik Cache. This will help in preventing boot loop issues or any boot ROM related errors duringfirmware installation

Step 9 - Then return to the main recovery menu and choose InstallZip from SDcard

Step 10 - Now click Choose Zip from SDcard. Use volume keys to navigate to the AOSP ROM zip file that you copied earlier to your phone's SD card and choose it by tapping the Power button. Confirm the ROM installation on next screen and the installation process will begin

Note: Repeat Step 9 and Step 10 to install Google Apps (Gapps) as well

Step 11 - Once the ROM and Gapps installation completes, go to "+++++Go Back+++++" and select Reboot System Now in the Recovery menu

The phone will now reboot and the first boot may take about five minutes to complete. So, please be patient.

Your Galaxy Nexus I9250 is now running the latest Android 5.0.1 Lollipop update via AOSP ROM. Go to Settings > About phone to verify the firmware version installed.

[Source: Team Android]