Step 3: Using the Tool via UEFI Shell (Advanced Technicians)
| Error / Issue | Likely Cause | How to Troubleshoot | | :--- | :--- | :--- | | | You are not in the correct directory on your bootable USB drive. | Use the dir command to list the contents of your current folder. Navigate to the folder containing DMITOOLS.EXE using the cd (change directory) command. | | Changes don't appear after rebooting. | A system restart is required for the BIOS to read the new data from the EEPROM. | Ensure you have restarted your laptop completely after running the command. For write commands, a reboot is mandatory for the changes to take effect. | | "This program is for internal use only" warning. | This is a standard notice on the tool, not an error. | You can safely ignore this message. It is included to indicate that this is not a consumer utility. | | New serial number is only partially displayed. | You may have exceeded the maximum character limit for that specific field. | Re-run the command with a shorter string. Each field has a maximum length. | | Predator Sense still doesn't detect the model. | The DMI information might not be the only thing causing the issue. | Double-check that you wrote the serial number and, crucially, the Product Name (e.g., "Predator PH315-54") correctly using /Wp . | acer dmi tool link
While writing DMI information requires Acer’s proprietary tool, you can existing DMI data using several freely available utilities: Step 3: Using the Tool via UEFI Shell
: Avoid downloading "DMI Tools" from unofficial websites. These tools often require booting into a low-level environment and can permanently damage your motherboard if used incorrectly. | | Changes don't appear after rebooting
Was the , or are you fixing a corrupted BIOS?
| Error | Likely cause | Fix | | ------------------------------------- | -------------------------------- | ---------------------------------------- | | No DMI pool data | Missing DMI after BIOS update | Boot DOS, run DMI tool with correct data | | Invalid serial length | Wrong format for model | Check sticker – usually 11–22 chars | | Tool not working on this system | Wrong tool version | Get exact version for your motherboard ID |
Use a tool like to create a bootable FreeDOS USB drive. Copy the DMI tool files to the root of the USB. 2. Identify Your Data