Originally Posted by jfriend00
I'm running an ASRock Z390 Taichi with a nicely overclocked 9700k and overclocked RAM. System has been stable for 3 months and I'm happy with it. I'm running BIOS version 1.90.
ASRock makes available two new versions of the BIOS (2.0 and 4.0) in the last few months, both of which are labeled "Update Intel Microcode", but no explanation of what that updated Intel microcode does (performance, security, ??). The most recent version also has a disclaimer that once you upgrade, you can't downgrade back to an earlier version of the BIOS.
Should I upgrade the BIOS to pick up Intel Microcode changes which might improve performance or security? Or don't upgrade because my system is perfectly stable so why mess with something that works just fine?
How do you personally decide whether to install a new BIOS version in a system that's been stable for awhile?
I had a Asrock Extreme4 z390 that came with a bricked BIOS, I did flash it afterwards, and it didn't help. Asrock also states that latest bios is NOT reversable to previous versions of BIOS, so it may help, or it may hurt, and you never know until you try it.
I actually managed to flash bios to earlier versions, but you may brick your board going backwards.
So mileage may vary, and no one can truly advice you for sure, because it's on board by board basis. I have Asrock Taichi z390 currently and I had it flashed to latest BIOS right away. Just to make sure it works with my 9900k to the best of its' abilities.
You will have to gamble with it a bit, if something happens, either do a replacement with retailer, or send the board for RMA to ASROCK
There is a wonderful saying in USA: "If it ain't broke, don't fix it"