If you have tech skill then you could find it yourself, https://www.youtube.com/watch?v=3pflC72NfnU&t=1013s
If not i dont suggest you to do it, it also needs an liquid metal, well im gonna do that mod mid summer since i dont have any money to buy spare GPU in case of BZZZZ.
As far as i know Gigabyte is heavily overclocker as it has more power limit 150% from other brands like MSI and etc.
I searched trought the techpowerup and asked few questions flashing is risky.