According to MSI Support for CPU Compatibility for your Motherboard. The Motherboard must have at least BIOS Version 7A39v1C installed: Support For A320M GAMING PRO | Motherboard - The world leader in motherboard design | MSI Global .
For Ryzen 7 1700 you will need at least BIOS Version 7A39v10 installed. Find out which version the motherboard that you are purchasing has installed.
BIOS Version 7A39v10 seems to be the original BIOS when the motherboard first came out. It is dated 03/13/2017. BIOS Version 7A39v1C came out on 03/20/2018. IF your motherboard was manufactured after 03/20/2018 than it would have the correct BIOS installed for the 2600 CPU.