Galaxy nexus I9250 Android device can now be updated with the latest version of Lollipop 5.1.1 OS. Unfortunately, Google may not release the 5.1.1 release for this device anymore and all thanks to the custom ROM firmware makers who are constantly working towards developing new firmware updates. So let’s check on how you can update your Galaxy nexus I9250 device with the latest Lollipop 5.1.1 Android OS.
Create a backup of all the data in your Nexus device.
SMS – Download SMS Backup & Restore app and create the backup. Once done, transfer the backup file to your computer,
Call Log – Download Call log Backup & Restore app and create the backup. Once done, transfer the backup file to your computer,
Local Files – Transfer all the data like photos, downloads, music files, videos etc. to your computer.
Nexus 7 should be left with the minimum of 60% battery charge for successful firmware installation.
Navigate to the path, Settings About Device and tap multiple times on the build number so as to enable the developer mode till you see the message that which indicates that developer mode is enabled.
Navigate to the path Settings Developer Options to enable the USB debugging mode.