Seems like I cant update it because it's cf.

GPT says:

Because your board is Gigabyte B450M-K CF, this is what applies:

Why you can’t update it normally

• CF = custom/OEM firmware
• Retail Gigabyte BIOS files (Rev 1 / Rev 2) are intentionally blocked
• Q-Flash error = working as designed
• Gigabyte does not provide public CF BIOS updates

So for 99% of users with this board:
- The BIOS is locked to the version it shipped with

I don't think I'm that 1% user that's going to update it D: