B550 phantom Gaming ITX/AX bios problem.

[bayubima]

Hello all

My friend has a B550 Phantom Gaming ITX/AX motherboard with BIOS version L2.61 installed. However, in the BIOS HW Monitor section, there's an error in detecting temperature and fan RPM (CPU temp: 6500°C, M/B temp: -1°C, and fan RPM: 65535 RPM).

I’m planning to update the BIOS, but I’m confused because BIOS version L2.61 is not listed on the B550 Phantom Gaming ITX/AX motherboard’s support page. Additionally, the website states: "To support Ryzen 5000G series processors, it requires updating the BIOS with a Matisse, Renoir, or Vermeer CPU."

What should I do? If I need to update the BIOS, which version should I update to?

Thank you

 

[eidairaman1]

What cpu is in there?

 

[bayubima]

What cpu is in there?

Ryzen 5 5600G

 

[Countryside]

https://pg.asrock.com/mb/AMD/B550 Phantom Gaming-ITXax/index.asp#BIOS

2.61 2023/2/17

Update to latest bios 3.40

 

[eidairaman1]

Ryzen 5 5600G

2.61 is on there the L denotes a early beta bios.

Anyways its Ryzen 3000, 4000, 5000 that must be present to flash, it just means the bios chip isnt large enough to support a Ryzen 1000 or 2000 apu.

 

[bayubima]

Should I update the BIOS directly, or do I need to use a Matisse, Renoir, or Vermeer processor to update it? Because 5600G processor is a "Cezanne."

 

[eidairaman1]

Should I update the BIOS directly, or do I need to use a Matisse, Renoir, or Vermeer processor to update it? Because 5600G processor is a "Cezanne."

Its already working, you can try it or contact asrock.

 

[A Computer Guy]

Hello all

My friend has a B550 Phantom Gaming ITX/AX motherboard with BIOS version L2.61 installed. However, in the BIOS HW Monitor section, there's an error in detecting temperature and fan RPM (CPU temp: 6500°C, M/B temp: -1°C, and fan RPM: 65535 RPM).

That's a beta bios. Personally I wouldn't stay on the beta BIOS, I would flash up to UEFI/BIOS P3.30 or P3.40 however there is always a risk of something going wrong when flashing so you will need to use your best judgement if it's worth the risk. This motherboard does not have flashback capability.

I’m planning to update the BIOS, but I’m confused because BIOS version L2.61 is not listed on the B550 Phantom Gaming ITX/AX motherboard’s support page. Additionally, the website states: "To support Ryzen 5000G series processors, it requires updating the BIOS with a Matisse, Renoir, or Vermeer CPU."

That message is if you are flashing prior to 5000G support. You are already past that point.

What should I do? If I need to update the BIOS, which version should I update to?

Thank you

I have two of these boards and UEFI/BIOS P3.40 seems to be just fine at least with 5950x and 5800x. YMMV with different hardware. Before flashing you need to remember to disable TPM, save, reboot, then flash, reboot, reset to default, save, reboot, finally reapply any custom settings, save, reboot. If you have any custom applied settings be sure to write them down before flashing so you can apply them again after flashing.

As a side note these boards may be a bit weird about voltages. I recall early UEFI/BIOS versions of this board like to set 1.2v SOC by default but after some update they stopped doing that and changed up something about how they applied default voltages including dropping the LLC options to their lowest settings.

After that happened I got stable again by adjusting voltages like in the image below (and increasing LLC back to mid range values) but I wouldn't bother changing anything with voltages or LLC if your system is already running stable.

Amazon indicated this board was an often returned item so I think perhaps the quality must be a bit of hit or miss. My second board is just fine (besides the voltage adjustment noted in the below image) the first one started to have issues after about a year or two of use and after 6 months of eventually replacing all parts of that build it occasionally still has an issue with crashing programs. In addition to the voltage adjustment noted below returning to 1.2v SOC helped increase stability of that first problematic motherboard that was having issues.

 

[bayubima]

That's a beta bios. Personally I wouldn't stay on the beta BIOS, I would flash up to UEFI/BIOS P3.30 or P3.40 however there is always a risk of something going wrong when flashing so you will need to use your best judgement if it's worth the risk. This motherboard does not have flashback capability.

That message is if you are flashing prior to 5000G support. You are already past that point.

I have two of these boards and UEFI/BIOS P3.40 seems to be just fine at least with 5950x and 5800x. YMMV with different hardware. Before flashing you need to remember to disable TPM, save, reboot, then flash, reboot, reset to default, save, reboot, finally reapply any custom settings, save, reboot. If you have any custom applied settings be sure to write them down before flashing so you can apply them again after flashing.

As a side note these boards may be a bit weird about voltages. I recall early UEFI/BIOS versions of this board like to set 1.2v SOC by default but after some update they stopped doing that and changed up something about how they applied default voltages including dropping the LLC options to their lowest settings.

After that happened I got stable again by adjusting voltages like in the image below (and increasing LLC back to mid range values) but I wouldn't bother changing anything with voltages or LLC if your system is already running stable.

Amazon indicated this board was an often returned item so I think perhaps the quality must be a bit of hit or miss. My second board is just fine (besides the voltage adjustment noted in the below image) the first one started to have issues after about a year or two of use and after 6 months of eventually replacing all parts of that build it occasionally still has an issue with crashing programs. In addition to the voltage adjustment noted below returning to 1.2v SOC helped increase stability of that first problematic motherboard that was having issues.

View attachment 387777

Thank you for your answer. Tomorrow, I will try updating directly from L2.61 to P3.40. Hopefully, it goes well—failure is not an option!