I have two of d510mo boards. One with bios version 0148 and newer with bios version 0516.
With second I have booting problem when I use a USB device for my car, Joycon
Booting stacks with postcode 5A and do nothing until remove USB device. I have disabled USB Legacy from bios and all other options with usb.
The other board with version 0148 has no booting problem with this device! I have disabled USB Legacy and works perfectly!!
I also have a problem with the sound card. When PC starts, a instantaneous annoying big noise sounds!! But with 0148 version just a normal beep sounds. I tried to downgrade bios, but the only version that it accepts is 0516. Is there any solution?
At least could anyone tell me if it's possible to downgrade bios, and by which way?