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Force flashing older bios version on AMD X370 Motherboard

 
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post #1 of 4 (permalink) Old 07-23-2020, 08:00 PM - Thread Starter
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Force flashing older bios version on AMD X370 Motherboard

I own an ASRock X370 Taichi motherboard. I bought it used off ebay with the first round of Stimulus checks here in 2020. I own a Ryzen 5 2600 processor. When I bought it off ebay the seller had flashed the most recent bios version off the website, which was version 6.20, with AGESA "Combo-AM4 1.0.0.4 Patch B". I have had instability and blue screens and crashes for the first 2 months until I looked at the bios listings on the ASRock website for my motherboard. For reference here is a link to that so others can read it: https://www.asrock.com/mb/AMD/X370%20Taichi/#BIOS There is the message posted for the 2 most latest bios's here: "*ASRock do NOT recommend updating this BIOS if Pinnacle, Raven, Summit or Bristol Ridge CPU is being used on your system." Okay.. I have Pinnacle Ridge, so I back-flashed backwards to the latest bios that does -NOT- have that message, 5.60 and ever since my system has been completely stable now and everything is golden.

However tonight I was reviewing the bios versions here and there is an older bios listed, 5.10 which apparently has AGESA version 1.0.0.6 ... !!!! Lots newer than the AGESA 1.0.0.1 that I'm currently using from bios version 5.60 right now. However they won't allow us to flash it backwards in bios to an older version.

I do have physical tools here to "clip on to" the bios chips physically and force flash a rom into them. I was considering doing this with an older bios version but I wanted to ask here first if anyone has tried this and if I try it is there a risk to brick my board just from going to a different bios version?
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post #2 of 4 (permalink) Old 07-23-2020, 08:10 PM
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AMD has this BIOS partitioning going on which could be problematic if I recall correctly. Win-raid forum certainly has some threads on this in BIOS modding section.
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post #3 of 4 (permalink) Old 07-23-2020, 08:12 PM - Thread Starter
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Quote: Originally Posted by Melan View Post
AMD has this BIOS partitioning going on which could be problematic if I recall correctly. Win-raid forum certainly has some threads on this in BIOS modding section.
I was suspecting something like that.. and so this is a pretty sad situation. If I continue using a 2nd gen / Pinnacle Ridge / 2000 series chip on this board I'm restricted to AGESA 1.0.0.1 forever.
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post #4 of 4 (permalink) Old 07-23-2020, 08:23 PM
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Win-raid might have a solution, just gotta read on it. Only thing is, backup (twice and verify) your current bios binary and don't flash the stock bios because it comes without serial, UUID and LAN MAC address. Without these windows activation along with anything else dependent on it will fail on boot.
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