New AM5 BIOS updates now available

Greetings to all good people.
After flashing the BIOS from 4.10 to 4.20, the computer worked for about 10 days.
2 days ago I was greeted by error cod 00.
While I was thinking about what to do, which lasted for about 10 minutes, the board started spinning codes, 15 and so on, but stopped at code 94.
I restarted the computer again, after the restart it did not want to boot, the error code remained 00.
I reset the bios and turned it on, again at code 00 which was hidden for about 20 seconds, after that the PC worked normally and entered windows.
I reset again and went into bios and put EXPO profile and 00 again.
Restart again and the PC is stuck at 94 again.
I tried several times, after that I went back to bios 4.10 and nothing was fixed, code 94.
I restored the even older bios 3.5, but it didn't want to continue except for 00.
I went back to 4.20 again and it works normally only with JEDEC, if I try EXPO it gets stuck on either 00 or 94.
Does anyone have any idea what to do?
x870e nova wi fi+ 2x32 gb kingston 6000 mt/ cl 36 + 4090.
I use a riser and these days when I can I will test the system without a card.

Of course I read it, but I can't remove the battery, because that would require removing the chipset cooler, so I'd probably lose the warranty because of that.

I've already done that, so I'm waiting for an answer.

Hi Dxxxxxx Dxxxxxx,
Thanks for your reply.
Please try to enable "LN2 mode" in BIOS to check the result.
Advanced\AMD Overclocking\AMD Overclocking\LN2 Mode
If the problem persists, please cross-test with another CPU to verify if it can boot up properly if possbile.

Here is my answer to Asrock.

It's finally working, I'll test it again, because sometimes it works, but when it's turned off overnight, it won't boot. I already tried this solution and "LN2 mode" didn't work, maybe I did something wrong, in any case it works now. Considering that it was error 94, I suspected that it was not a dumbed-down graphics card. I reinstalled the MSI center and did a scan, the graphics logged out and logged in and through the MSI center I turned off the RGB on the card.
Maybe that also helped the system to recover.

In any case, thank you for your support.