Dell Latitude 5500 Setup and Specifications

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Updating your system BIOS using a USB flash drive

If the system cannot load into Windows but there is still a need to update the BIOS, download the BIOS file using another system and save it to a bootable USB Flash Drive.
NOTE You will need to use a bootable USB Flash drive. Please refer to the following article for further details: https://www.dell.com/support/article/sln143196/
  1. Download the BIOS update .EXE file to another system.
  2. Copy the file e.g. O9010A12.EXE onto the bootable USB Flash drive.
  3. Insert the USB Flash drive into the system that requires the BIOS update.
  4. Restart the system and press F12 when the Dell Splash logo appears to display the One Time Boot Menu.
  5. Using arrow keys, select USB Storage Device and click Return.
  6. The system will boot to a Diag C:\> prompt.
  7. Run the file by typing the full filename e.g. O9010A12.exe and press Return.
  8. The BIOS Update Utility will load, follow the instructions on screen.
    Figure 1. DOS BIOS Update Screen
    Displays the DOS Bios update screen

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