How to upgrade any vivo smartphone firmware

I have download this.But I can't upgrade my vivo y31 so how to solve? pliz send me how solve

Fireware downloaded and what next pls reply

Is it safe to system update?

how to upgrade to my vivo y55s

how to update my vivo y53 bro

bro i cant get that website will you send that link

after downloading firmware what we have to do

Guys you still need to use your pc for it to work

Bhai nahi ho raha

Send me link

Bro in your vivo y 31 battery percentage is showing but in my phone it's not showing help

lol

𝚃𝚑𝚡 𝚏𝚘𝚛 𝚝𝚑𝚎 𝚝𝚞𝚝 𝚋𝚞𝚝 𝚞𝚛 𝚙𝚑𝚘𝚗𝚎 𝚒𝚜 𝚔𝚒𝚗𝚍𝚊 𝚕𝚊𝚐𝚐𝚢

Why my connection vivo y31L not show 4g

Totoo bayan

Kmk

Hello my friend. Can you make a video to help me update my vivo y55a from version 10.0 to a more advanced version?

anyone can sent me the link how to upgrade my vivo y51A (2015) old android 7 to android 8 or 9 or 10? china versions.. need help