[Problem] MSI A320M PRO-VD/S motherboard bios downgrade

BIOS/UEFI Modding BIOS Modding Guides and Problems
1

Hello everyone,

How it happened:

So after trying to downgrade my motherboard from beta version to a stable version utilizing the uefi flash tool . My motherboard now shows a white ez debug light and no display.

What I have tried:

  • Tried reseting the bios setting by shorting the pins and removing the CMOS battery

The question:

I’m sure this can be solved by utilizing a bios programmer and I have few questions regarding it:

  • Which programmer can I use for my motherboard? I found “CH341A Programmer” to be the most common one but not sure how to check if it support for motherboard.

  • Looking into my bios chip i noticed it was a 1.65V-1.95V supply range will I also require a 1.8V adapter along with a programmer?

  • If a programmer is chosen, what things do I need to keep in mind so that I dont end up fusing my bios chip?

Components Information:

  • Motherboard: MSI A320M PRO-VD/S

  • CPU: Ryzen 3 2200G

  • BIOS Chip: winbond 25Q128FW5Q 1829

Thank you, let me know if any other or more information is required.

2

All the info you need regarding a programmer is on these threads, i suggest you read them, this is a general rule and doesnt need to be specific to mb model, for READING and LEARNING…

Specific rule is IC datasheet and correctly identify specs/connections of the IC present in the mb.

[Guide] Using CH341A-based programmer to flash SPI EEPROM - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum

[Guide] Flash BIOS with CH341A programmer - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum

[Guide] How to Use a CH341A SPI Programmer/Flasher (with Pictures!) - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum

3

Okay, understood. I have gone through them and got a vague idea of the overall procedure, will try once my programmer arrives.
I had just one question/confirmation whether or not I will require a 1.8V adapter as my bios chip is 1.65-1.95V instead of the usual ~3.3V
Update: Its a dumb question, 1.8V adapter is required. Thank you for the guides, I will try the procedure once I get it.