A: Technically yes, using SP Flash Tool and a stock Marshmallow ROM. But it voids warranty (expired anyway) and may brick the device. Not recommended.

For users seeking the most stable version, Vivo maintains an official repository. The latest system update for the Vivo V5 (model PD1612F) was released as recently as August 2020 , focusing on system stability and compatibility. To update your device: V5 Funtouch OS PD1612F_EX_A_3.14.9 ... - Vivo

If you’ve tried everything and your Vivo V5 refuses to show the Android 7.0 update, you have three alternatives:

Since there is no official 7.0 update, some users explore to reach newer Android versions. However, this requires unlocking the bootloader and potentially rooting the device, which carries risks such as: Voiding the warranty. Potential "bricking" (making the device unusable).

to Android 7.0 (via Funtouch OS) introduces several system-level enhancements: