I did see that and then thought to myself if the team in the OCUK shop knew about the EC FW tool. They did mention that there were two updates they needed to do so I assume that they did, but reading up a bit more I don't think this happened. If I want 4RAM sticks I'll need to go back to F31, but F31 then wont be compatible with the 3600.
I'm sure I read a post on Reddit from a gigabyte rep about updating with the tool while using a zen 2 chip - will see if I can dig it out.
edit
it's here:
https://www.reddit.com/r/Amd/comments/cdicxh/1003_agesa_bios_for_gigabyte_x370_boards/
comment from GBT_Matthew - "I would run the EC FW update, then reflash F40, then test. Don't go back to F31."
obviously I have no idea if that would actually work but it's a FYI.
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