I'm not too familiar with RMAs in general but in my case (Z490 Gaming Edge Wifi) it was clearly a brand new replacement.I made the purchase through Amazon Mexico and I already spoke with MSI. From the USA portal I was able to raise the RMA to be attended from Mexico and they already received it.
I only have the question if with the RMA it is ensured that they fix it or change it at no cost?
Well, if you get it back with the newest BIOS installed, then you won't have to update the BIOS ever again, there most likely won't be any new versions for Z490. Maybe they bring out one new version, if they tackle this potential bricking problem one day. Other than that, i don't think there will be another update. For all the older boards, the updates usually stop with the "Windows 11 supported" one.Just ditch this motherboard and upgrade? If you can't upgrade the bios going forward, without risk of bricking it, is it worth keeping?
About the Flash BIOS Button / USB Flashback, the main problem is that it is extremely picky about the USB drive/stick you try to use for it.And today it was my turn. MEG Z490 Unify
Thanks for the encouragement. Much appreciated and needed.About the Flash BIOS Button / USB Flashback, the main problem is that it is extremely picky about the USB drive/stick you try to use for it.
Basically, you have to keep trying with different USB sticks until they find one that works (the cheaper the USB stick, the better, from the feedback i got). It should take around 5 minutes of a certain kind of blinking for the process to complete. If it keeps blinking for longer, then it failed. If it doesn't start the certain kind of blinking, then it also failed. Also read here.
So don't give up easily, i'm sure you can eventually recover from the BIOS bricking problem with the Flash BIOS Button on your board.
I got an CH341A and used this guide:I gave up trying to flash with the BIOS button and got an EEPROM programmer instead. Worked fine and problem solved.
One more video that does not explain CH341A sends 5V on data lines ... MX25L25673G used on MEG Z490 Unify is a 3V flash memory https://www.tme.eu/Document/1068b2ce565f5d3901bf372487b29d49/MX25L25673G, 3V, 256Mb, v1.4.pdfI got an CH341A and used this guide:
Hm. Yes. Seems like I was lucky when using the CH341A. The PC works fine now, so atleast I were lucky with something.One more video that does not explain CH341A sends 5V on data lines ... MX25L25673G used on MEG Z490 Unify is a 3V flash memory https://www.tme.eu/Document/1068b2ce565f5d3901bf372487b29d49/MX25L25673G, 3V, 256Mb, v1.4.pdf
There are some CH341A versions with an included switch for different voltages anyway I still was not able to find one in Europe (not that I am really searching for it).
Electronic components have tolerance anyway you supplied almost double the voltage to it; you were lucky.
All in all I wouldn't had give up with Flash BIOS button ...