Writing to the DMI block carries a risk of corrupting the BIOS. Always back up your current BIOS chip using a programmer or software dump before proceeding.
Copy the DMI executable (usually DMI.exe , AMIDE.exe , or H2OCPU.exe ) to the root of the USB. acer dmi tool link
Disable "Secure Boot" in your BIOS settings and boot from the USB. Writing to the DMI block carries a risk
Rather than searching for a "universal" link, search for your specific model series (e.g., "Acer Aspire A515 DMI Tool"). Tools are often specific to the motherboard manufacturer (Compal, Quanta, or Wistron) rather than Acer itself. or Wistron) rather than Acer itself.