You Can Install Android 6.0 Early If You Want
If you don't want to wait a few days or a few weeks, you can download and install the Android 6.0 Marshmallow update right now.
We've put together a guide that will take you through the manual installation process. It's a little involved but it will help you get the software on board your Nexus variant ahead of your OTA.
Even if you decide against it, you'd be wise to keep the process bookmarked just in case you want to try it with a future update.
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