Power off your phone. Press the button combo for recovery (e.g., Volume Up + Power). You will see the TWRP menu.
This is the safest place to find ROMs.
Have you successfully flashed a custom ROM on an old device? Share your experience in the comments below. For more guides on legacy Android versions, subscribe to our newsletter. android 7.0 custom rom zip file download
The general process for flashing a custom ROM zip file involves these critical steps: Power off your phone