Author: parsecSubject: Cannot overclock Ryzen 1700X after new BIOS update
Posted: 13 Dec 2017 at 10:17am
EGN, thanks for your proof about the performance problem with the new 4.20 UEFI version. ASRock and I are sorry that you had that experience with that new UEFI version. You are right that there is a problem with the 4.20 UEFI, sorry to say.
I have some news about the new AM4 UEFIs with the 1.0.7.2 AGESA microcode. ASRock knows there is a problem with them, and has now removed them from all the AM4 mother board UEFI/BIOS download pages. Those UEFI versions are
not dangerous, but the performance issue will be fixed as soon as possible. Exactly when the new UEFI versions will be available, I do not know at this time.
Anyone that has updated to an AM4 4.xx UEFI version dated in early December, 2017 (12/1/2017 - 12/10/2017) should
use Instant Flash to change back to the UEFI version that was issued prior to the version with the AGESA 1.0.7.2 microcode.
For example, for the A320M-HDV, A320M-DGS, A320M Pro4, AB350M-HDV, Fatal1ty AB350 Gaming K4, AB350 Pro4, and the AB350M Pro4, that would be UEFI version
3.30.
For the X370 Killer SLI and X370 Killer SLI/ac boards, the Fatal1ty X370 Gaming X, Fatal1ty X370 Gaming K4, Fatal1ty X370 Gaming-ITX/ac, and Fatal1ty AB350 Gaming-ITX/ac, that would be version
3.40.
For the Fatal1ty X370 Professional Gaming, A320M, and the AB350M, that is version
3.10.
For the X370 Taichi, that is version
3.20.
It is completely safe to change to the previous UEFI version using Instant Flash. If you've never used Instant Flash, instructions can be found in the link below, or with the link on the BIOS download page for your board:
http://www.asrock.com/support/BIOSIG.asp?cat=BIOS8
If anyone has questions about this, feel free to ask.
We are sorry for any inconvenience this has caused ASRock AM4 users.