The Vivo V5 originally shipped with Android 6.0 (Marshmallow) and officially received Android 7.0 via OTA. However, if you are referring to a "portable" update (e.g., moving it to another phone or a custom ROM), the tone changes. I have prepared two options based on what you likely mean.
In the Android modding community, refers to a custom ROM (unofficial firmware) that has been ported from a similar device to run on the Vivo V5. vivo v5 android version 70 update portable
Instead of risking an unstable portable ROM, consider: Note: The Vivo V5 originally shipped with Android 6
✨ ✨ Improved Doze mode for battery life ✨ Enhanced notification management Instead of risking an unstable portable ROM, consider: