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

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