Here is something I put on another forum: BUT PLEASE PLEASE PLEASE... BACKUP your bios first and keep it safe. I found that the Strix OC bios did not play nice with my my STRIX non-OC. I got a lovely overclock on my stock bios AND i was able to overclock my memory, something I couldn't do at all on the OC bios. I am now fully stable at 2030(ish)Mhz Core / 9008Mhz Memory on the original BIOS.
Anyway.. here is what to do:
Flashed my Asus Strix 1070 (non-OC) with the OC bios. Eventually I worked out that I needed 5.292 version: https://www.techpowerup.com/downloads/2709/nvflash-5-292-0-for-windows/mirrors
*** IF RUNNING 64 WINDOWS MAKE SURE YOU DON'T COPY ACROSS THE 32-bit SYS FILE, you only need one, either 32 or the 64 ***** IMPORTANT: DO THIS AT YOUR OWN RISK. I TAKE NO RESPONSIBILITY FOR YOU BREAKING YOUR CARD AND ACCEPT NO LIABILITY**
Follow the instructions and put that in a folder called nvflash on the C drive along with the rom. ***BACK UP YOUR ORIGINAL BIOS ****
DISABLE YOUR 1070 ADAPTER IN DEVICE MANAGER
Open a CMD window with Administrator permisions.
Then use these 3 commands:
nvflash -i0 --protectoff
nvflash -i0 -6 Asus.rom (Where Asus.rom is the name of the rom file to flash).
nvflash -i0 --protecton
RE-ENABLE 1070 adapter in device manager.
Reboot your PC, and cross your fingers.