Upgradeing to Android Nougat 7.1.1 can be done by Download Lineage OS ROM to Motorola Moto Z Play (code: addison). But please have it noted to your mind guys/girls, this ROM is Unofficially build by developers wich is not officially aligned with Lineage Teams. And it's still in Nightly stage and its possible have some bug to be frank.
Latest update of Lineage OS ROM for Motorola Moto Z Play variant can be download below if you insist to upgrade.
You will need a custom recovery to flash both files to your phone. If you don't have this, you can search the correct twrp here and install them before head.
Make a nandroid backup before flashing this rom zip and gapps. This is the perfect way. You can use Titanium Back-up, but i'm not recomend you.
Charge your phone if there is 20% remaing on power. At least at 60% capcities or more is better.
insist installing this Lineage ROM.
1. Download ROM Lineage OS 14.1 Moto Z Play (addison)
To download rom zip available below, you need a stable data connection or connected to wi fi network to make sure your rom zip downloaoded perfectly.
Place Lineage rom zip to you r phone storage.
2. Download GApps for Lineage OS 14.1For the convienant of using your phone after updating to Lineage OS, you will need to flash google apps package. Download GApps from link provided below.
Place it to your phone storage.
3. Installing Lineage OS to Moto Z PlayThe the rest step is intalling Lineage OS you've downloaded to your Moto Z Play along with GApps for Lineage.
Place both files into your phones storage wether it external or internal. But make sure you remeber the location.
Shut down Moto Z Play and boot it into recovery mode after waiting ± 5 second to make sure it was shutted down properly.
Look at the main menu of your sustom recovery. Choose install menu and confirm yaour action to flash Lineage OS rom zip first. And follow it with GApps for lineage zip package. This action can be different across recovery you have. For example: TWRP have the slide button to confirm flashing.
Now what you need is just waiting until the flashing process completed. It would take some tome, be patient.
Boot to system after you wiping dalvik/art cache and cache. You can also root it in one instant with SuperSU zip package, it's optional.
Recomended reading: Enable Native Root on Lineage OS or replace it with SuperSu
Now your Moto Z Play had been using Lineage OS 14.1 powered with Android Nougat 7.1.1. Enjoy it.