There is no official "verified" standalone tool from Dell for downloading to reset a BIOS password . Dell explicitly warns against using unauthorized reset tools

Firmware Damage: Using an unverified tool that attempts to "flash" your BIOS can permanently brick your motherboard.

How to verify: Check the MD5/SHA-1 hash provided in the readme file to ensure the integrity of your download.

Common non-official approaches (risks and limitations)

• Backdoor/master password generators