Are you looking to change a specific hardware identifier (like a serial number), or are you trying to fix an "Unknown" motherboard error in your system?
For now, dmiedit+520 remains the gold standard for older AMI UEFI boards (pre-2020). For newer systems, consider hardware SPI programmers like CH341A or FT232H. dmiedit+520
The "+520" could imply support for specific hardware models or types not fully covered by the standard tool. Are you looking to change a specific hardware
For more advanced users, running DMIEdit from a UEFI Shell is often safer as it bypasses OS-level write protections. Example command: AMIDEEFIx64.efi /SS "NewSerialNumber123" dmiedit+520