The file specific to your exact device model number.

To find and download an Android 7.0 (Nougat) custom ROM zip file, you must identify a ROM specifically built for your device model, as ROMs are not "one size fits all" Where to Find & Download ROM Zip Files

There is no such thing as a "universal" Android ROM. A ROM designed for a Samsung Galaxy S7 will permanently brick a Google Pixel.

If your phone gets stuck on the boot animation for more than 20 minutes, boot back into TWRP, perform another factory reset (Wipe Data/Cache), and re-flash the ROM ZIP file. Conclusion

You must have TWRP (Team Win Recovery Project) installed.

To download an Android 7.0 custom ROM zip file, follow these steps: