Updating Bios On Systems With Bitlocker Enabled; Updating Your System Bios Using A Usb Flash Drive - Dell Latitude 9420 Service Manual

4. Choose the Products category from the list.
NOTE: Choose the appropriate category to reach the product page.
5. Select your computer model and the Product Support page of your computer appears.
6. Click Get drivers and click Drivers and Downloads.
The Drivers and Downloads section opens.
7. Click Find it myself.
8. Click BIOS to view the BIOS versions.
9. Identify the latest BIOS file and click Download.
10. Select your preferred download method in the Please select your download method below window, click Download File.
The File Download window appears.
11. Click Save to save the file on your computer.
12. Click Run to install the updated BIOS settings on your computer.
Follow the instructions on the screen.

Updating BIOS on systems with BitLocker enabled

CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the system it
will not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress and
the system will ask for this on each reboot. If the recovery key is not known, this can result in data loss or
an unnecessary operating system reinstall. For more information about this subject, see Knowledge Article:
Updating the BIOS on Dell Systems With BitLocker Enabled

Updating your system BIOS using a USB flash drive

About this task
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. For more information, see
Drive using Dell Diagnostic Deployment Package (DDDP)
Steps
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 Enter.
6. The system will boot to a Diag C:\> prompt.
7. Run the file by typing the full filename, for example, O9010A12.exe and press Enter. The BIOS Update Utility will load.
8. Follow the instructions on screen.
How to Create a Bootable USB Flash
System setup 77