Motherboard [06/05/2026]ASRock DeskMini A/X300 BIOS - "P2.20"(final), "P2.20.SL01"(native S3), "P2.20A"(SS disabled) & "P2.20B"(ACS on) - AGESAv2 Pi "1.2.0.10"
- Thread starter HydrAxx747
- Start date
Scroll half way down to drop down section to download BIOS
BIOS Downloads Auswahl: -->
DeskMeet X300 - Version 1.70a (CO)
DeskMeet X300 - Version 1.70 (AGESA 12010)
DeskMeet X300 - Version 1.60a (CO)
DeskMeet X300 - Version 1.60 (AGESA 120Cc)
DeskMeet X300 - Version 1.43 (AGESA 120Cc)
DeskMeet X300 - Version 1.40F (AGESA 120C)
DeskMeet X300 - Version 1.40F (AGESA 120C)
DeskMeet X300 - Version 1.40F JZ (AGESA 120A)
DeskMeet X300 - Version 1.40E JZ (AGESA 120A)
DeskMeet X300 - Version 1.40E (AGESA 120A)
DeskMini X300 - Version 2.20JZ (AGESA 12010) S3/CO *
DeskMini X300 - Version 2.20 (AGESA 12010) noS3
DeskMini X300 - Version 2.10JZ (AGESA 120E) S3/CO *
DeskMini X300 - Version 2.10JZ (AGESA 120Cc) S3 *
DeskMini X300 - Version 2.10 (AGESA 120Cc) noS3
DeskMini X300 - Version 2.00JZ (AGESA 120Cc) S3 *
DeskMini X300 - Version 2.00 (AGESA 120Cc) noS3
DeskMini X300 - Version 1.91 (AGESA 120Cc) noS3
DeskMini X300 - Version 1.90.JZ (AGESA 120Cc) S3 *
DeskMini X300 - Version 1.90 (AGESA 120Cc) noS3
DeskMini X300 - Version 1.82.SL01.JZ (AGESA 120Cc) S3 *
DeskMini X300 - Version 1.82 (AGESA 120Cc) noS3
DeskMini X300 - Version 1.80.RC2 (AGESA 120C) noS3
DeskMini X300 - Version 1.80.RC2 JZ (AGESA 120C) S3 *
DeskMini X300 - Version 1.80.RC2 (AGESA 120C) noS3
DeskMini X300 - Version 1.80F (AGESA 120A) noS3
DeskMini X300 - Version 1.80E (AGESA 120A) S3 *
DeskMini X300 - Version 1.80C (AGESA 120A) noS3
DeskMini X300 - Version 1.72 (AGESA 1203A) noS3
DeskMini X300 - Version 1.70 (AGESA 1203A) noS3
Thanks! Do Curve Optimizer settings in Advanced + CTRL Q menu and SoC/Uncore OC mode disable work with this?
And although I don't need S3, other users might be interested if S3 works with this BIOS.
I think Curve Optimizer works, but I did not test S3 in Advanced + CTRL Q (it is set to "Modern Standby").
Maybe just test it to see, it may work, it is not beta anymore like the other versions with SS disabled.
I am pleased to see that the Security Processor has updated attestation, even if I did not use it at all (Windows 10, Secure Boot disabled and CSM enabled).
Maybe just test it to see, it may work, it is not beta anymore like the other versions with SS disabled.
I am pleased to see that the Security Processor has updated attestation, even if I did not use it at all (Windows 10, Secure Boot disabled and CSM enabled).
Last edited:
Just spotted this, don't think it's been mentioned here before.
X300 with 2.5G ethernet, also supports 128GB RAM and notably says it supports S3 sleep. Two BIOS, release 1.30, and 1.40 with the update to AGESA 1.2.0.10, both released on the 20th of January.
Interesting, maybe we'll still get x300 support for a while yet.
@HydrAxx747
X3MSTX_2.20B.zip (2.20 with ACS enabled for IOMMU, like my other BIOS's)
drive.google.com
X3MSTX_2.20B.zip (2.20 with ACS enabled for IOMMU, like my other BIOS's)
X300-BIOS - Google Drive
drive.google.com
ACS can be enabled in any BIOS by using the hidden menu CTRL+Q.@HydrAxx747
X3MSTX_2.20B.zip (2.20 with ACS enabled for IOMMU, like my other BIOS's)
X300-BIOS - Google Drive
Hello! I'm just curious if anyone has investigated why the A300 with the X300 bios won't boot if you save the configuration in the BIOS. I have one A300 with X300 Bios with the same problem. To compare the BIOS i need a dump (a raw dump from the spi flash) of a real X300. Thanks to anyone how want's to help.
hi, would u be kind to share how u resurrect yr a300 in detail. Thanks Alot.Hi,
Quick update, I managed to resurrect my A300 with a CH341A which im quite proud of. Big step for me
I wrote 3.60S on eeprom but the A300 won't boot if ssd was installed.
No problem with 3.70B though so I kept it.
Thank you Nick for your advices, really appreciated !
really managed to flashed and revived my a300, follow youtube
'How to Fix a Corrupted BIOS with a $5 Programmer | CH341A BIOS ...H' more important is u need a 1.8v convertor for the ch341a.
'How to Fix a Corrupted BIOS with a $5 Programmer | CH341A BIOS ...H' more important is u need a 1.8v convertor for the ch341a.
Follow-up on P2.20B (the ACS build I shared above) - I decompiled the IFR from the ROM and cross-checked on my live box (5650G).
Suspend: acpidump/iasl shows Name(XS3) in DSDT, not _S3. Kernel only exposes mem_sleep = [s2idle]. That matches @Aleo's note that the BIOS presents Modern Standby, not classic S3 STR, on the non-JZ final line.
Runtime idle (separate from suspend): with VMs up, cpuidle stops at C3 (no CC6 in turbostat). I have not tested P2.20.SL01 / 2.20JZ — no comment on whether those change runtime idle.
IFR offsets and live read-back notes are in my X300 BIOS write-up if useful.
Suspend: acpidump/iasl shows Name(XS3) in DSDT, not _S3. Kernel only exposes mem_sleep = [s2idle]. That matches @Aleo's note that the BIOS presents Modern Standby, not classic S3 STR, on the non-JZ final line.
Runtime idle (separate from suspend): with VMs up, cpuidle stops at C3 (no CC6 in turbostat). I have not tested P2.20.SL01 / 2.20JZ — no comment on whether those change runtime idle.
IFR offsets and live read-back notes are in my X300 BIOS write-up if useful.
New 1.50 Bios with AGESA 1.2.0.12 has appeared for the newer X300 with the 2.5gig ethernet.
https://www.asrock.com/nettop/AMD/DeskMini X3002.5G Series/index.asp#BIOS
Hopefully this makes it's way to the standard one.
https://www.asrock.com/nettop/AMD/DeskMini X3002.5G Series/index.asp#BIOS
Hopefully this makes it's way to the standard one.
And here it is, BIOS 2.30 with AGESA 1.2.0.12:
https://www.asrock.com/nettop/AMD/DeskMini X300 Series/index.asp#BIOS
https://www.asrock.com/nettop/AMD/DeskMini X300 Series/index.asp#BIOS
Similar threads
