How to Update Dell BIOS Using USB Flash Drive on Dell PC

Steps Perform Flash BIOS Update Using a USB Flash Drive on Dell Laptop, Desktop and All in One PC

Step 1: Create a Bootable USB Flash Drive using Dell Diagnostic Deployment Package (DDDP)
Please note using DDDP will create a bootable partition of up to 2Gb in size, on the USB Flash Drive.
Download the Dell Diagnostic Distribution Package (DDDP) Application: https://www.dell.com/support/kbdoc/en...
Go to: C:\Dell\Drivers\R174621
Open the DIAGS folder and delete everything except
COMMAND.COM
DELLBIO.BIN
DELLRMK.BIN
AUTOEXEC.BAT
CONFIG.SYS
Now Plug in the USB Flash drive- You will lose all the data on the USB Flash Drive so create a backup before this step.
Navigate to C:\Dell\Drivers\R174621\ and run DDDP exe file
Select "Install to a USB flash drive". This will make the USB Flash Drive bootable.
Step 2: Download the BIOS update file and save it to the USB flash drive. Make a note of the BIOS update file e.g. 5573113.exe
Note- Make sure battery is more than 10 % (Laptop users), and the charger is plugged in. Disconnect all the external devices except mouse keyboard and monitor. Do not power off the system during the BIOS Update
• Shut down your Dell computer.
• Plug in USB flash drive and restart your Dell computer.
• Keep tapping F12 key as soon as you start the Dell PC.
• Using the arrow keys, select USB Storage Device and press Enter key.
• At the command prompt, type the full BIOS filename e.g. 5573113.exe and press Enter key.
• Follow the instructions in the BIOS Update Utility screen to complete the update process.