Dell ChengMing 3990/3991 System BIOS

Restart required
Do not turn off your computer or disconnect from the power source while updating the BIOS as this could harm your computer. During the update, your computer will restart and you may briefly see a black screen.

Before updating, please read the installation instructions and important information noted below.
hi testing
Driver Id : 2MFVN
Importance : Critical
Version : 1.33.0, 1.33.0 Latest version Recommended version Latest and Recommended version
Release Date : 24 Apr 2025
Download Type : System BIOS
Category : BIOS
This package contains the Dell system BIOS update. BIOS is a firmware package that is embedded on a small memory chip on the system board. It controls the keyboard, monitor, disk drives, and other devices. This update addresses the Dell Security Advisories (DSA). A security advisory is a statement when a security vulnerability impacts a product, and a remedy is available for the vulnerability.

Download Files

File Format: This file format consists of a BIOS executable file. The Universal (Windows/MS DOS) format can be used to install from any Windows or MS DOS environment.
File Name: ChengMing_3990_3991_1.33.0.exe
File size: 29.22 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: af97585d3a567ca51c6119b98fdd5176
SHA1: 962c15186f18f065d57c4bbefb098f31625339e2
SHA-256: 7803d704e5034612cd1d31921ea7b5da594cbda335cd210c2de51a6a31d93eb6
Download .EXE
File Format: This file format consists of a BIOS Recovery image file. This file is used for the System BIOS Recovery process to recover a system from a corrupted BIOS.
File Name: BIOS_IMG.rcv
File size: 29.21 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: a24b0c00bed9d60423f3a2789377c0d1
SHA1: aa8016207ac56e243331c1f88a8c48c8ebd359eb
SHA-256: b907ef583eecb94ec9f8191265b4cbd6e1827113535c8121da022b018385f9a8
Download .RCV