Android Nougat is official and rolling out to devices, which means we’ll soon have access to factory images for many Nexus devices directly from Google. These builds are useful to flash a completely clean, stock image back to your device if you’ve been tinkering, playing with ROMs, or just want to start from scratch with a major iteration update.
It’ll take awhile for all of the devices to get their factory images, but currently you can download the 7.0 build for the Pixel C, Nexus 5X, Nexus Player, and the WiFi Nexus 9. There are a few devices missing, like the LTE Nexus 9 and the Nexus 6 and Nexus 6P, but they’ll be added soon. The other devices have officially been discontinued and won’t be seeing the Android Nougat update.
Hit the link below to grab what you need, or keep an eye on Google’s page if you’re waiting for the last few images to go live.
source: Google Developers