URL: https://developers.google.com/android/ota Contains signed OTA packages for Nexus/Pixel.

URL: https://developers.google.com/android/images Look for “Nougat 7.1.2 (N2G48C)” – last build for most devices. Authenticity: SHA-256 checksums provided.

You must download the exact ZIP file built for your specific device model number. Installing the wrong firmware will permanently brick your hardware. 1. Official Google Pixel and Nexus Devices