Can not update Bios- file read error

[Mark15ac02dd]

according to MSI center here are my specs
Serial Number: M309580316
Product Name: US Desktop Aegis RS
OS: Microsoft Windows 11 Pro 64-bit Ver.2009 (OS build 26200.8246)
BIOS Version: A.AA
BIOS Release Date: 12/12/2023
CPU: 13th Gen Intel(R) Core(TM) i7-13700F
Memory: 32 GB @
- 16 GB DDR5-4800, Kingston KF556C40-16
- 16 GB DDR5-4800, Kingston KF556C40-16
Graphics: RTX 4070 Ti GAMING TRIO Series, 12282 MB
Drive: HDD, USB Flash Disk, 231.1 GB
Network: Intel(R) Wi-Fi 6E AX211 160MHz
Network: Intel(R) Ethernet Controller (3) I225-V #2
Power Plan: GUID: 381b4222-f694-41f0-9685-ff5bb260df2e (Balanced)

System Info
OS Name Microsoft Windows 11 Pro
Version 10.0.26200 Build 26200
Other OS Description Not Available
OS Manufacturer Microsoft Corporation
System Manufacturer Micro-Star International Co., Ltd.
System Model US Desktop Aegis RS
System Type x64-based PC
System SKU Desktop
Processor 13th Gen Intel(R) Core(TM) i7-13700F, 2100 Mhz, 16 Core(s), 24 Logical Processor(s)
BIOS Version/Date American Megatrends International, LLC. A.AA, 12/12/2023
SMBIOS Version 3.6
Embedded Controller Version 255.255
BIOS Mode UEFI
BaseBoard Manufacturer Micro-Star International Co., Ltd.
BaseBoard Product PRO Z690-A WIFI (MS-7D25)
BaseBoard Version 2.0
Platform Role Desktop

this is suppose to be the latest bios -
AMI BIOS7D25vAN2026-04-079.80 MB = E7D25IMS.AN0 however after I hit m-flash - bios load file screen comes up and when i choose this file an error comes up and says its unreadable. Some of my games are not working right and the error says must upgrade bios, any help would be appreciated.

 

[citay]

There are specific BIOS updates for MSI's pre-built PCs, since they use a custom BIOS for them despite often using a retail board model, meaning that you cannot use the retail board's BIOS updates (unless you do some acrobatics first).

For the Aegis RS 13th, the updates are here (select your specific model): https://us.msi.com/Desktop/Aegis-RS-13th/support

If your current BIOS is vAAA, then vAAB should be the correct current one. By going through the list of Aegis RS 13th models, we can see that there's really just two different BIOS updates for all of them, either vAAB or vAA4, and due to the hexadecimal naming scheme, your newer one would be vAAB.

The update 7D25vAN you downloaded, that's theoretically for your board model, but only when bought as a retail board, outside of a pre-built PC. Since MSI (and many other brands) like to use a custom BIOS for their pre-built PCs, the retail BIOS updates cannot be "digested" by the integrated M-Flash, it sees that it's too different. You can use some tricks to do it anyway, but that's a bit more advanced, plus the custom BIOS for the pre-built PC is from 2026 at least, so it's not too far behind the retail board's versions. So I would just flash that now.

And yes, it is vitally important to use the latest BIOS version with this true 13th gen CPU CPU. Old BIOS versions contained buggy microcode for 13th/14th gen CPUs, triggering intermittent spikes of excessive voltage, which eventually cause CPU degradation to the point of instability.

Staying on a 2023 BIOS for this long was probably damaging already, the first fixes via new microcode came out in Q3 2024. There have been many a 13th/14th gen CPU that have been irreversibly deteriorated by the voltage spikes and ultimately had to be replaced by Intel.

And updating to the latest BIOS version only stops the voltage spikes and any future degradation, but it cannot undo damage that has been done. So let's hope the CPU is still fully stable, but you need to update to the latest BIOS version ASAP.

For some people, even if they had instability during launching of games for example, updating to the latest BIOS version can actually fix those crashes. That's not because the bad microcode was fixed, but instead, because the latest BIOS versions use a higher base voltage for the CPU, which is similar what overclockers do when they want to make an unstable frequency stable. So, since the voltage spikes are prevented, they raise the level of voltage as a whole, which can make deteriorated CPUs more stable again, but will also drive up power consumption for everyone. So if you see higher temperatures after this update, you can read here and here. But for now, updating the BIOS is the most critical thing, it's long overdue.


You can see two examples here where such CPUs were already unstable and became stable again on the latest BIOS:

But again, this is not because of the newer microcode as mentioned there, the microcode only prevents further worsening. It's because they cranked up the base voltage a bit more, which they felt confident in doing, now that the voltage spikes are prevented.