Sapphire will have the original BIOS, or if you're feeling lucky you can try the TechPowerup GPU VBIOS database ,https://www.techpowerup.com/vgabios/ , just be aware that flashing the wrong BIOS can result in a bricked card.
Thanks. I will contact them.
Techpowerup have bios for Nitro+ 8gb 1.Samsung 2.Micron
They dont have the bios for Nitro+ 8gb 1. Micron 2.Samsung
They also dont have bios for 8gb Micron or Hynix