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.

Dell Inspiron 3458 and 3558 System BIOS

Restart required Installed This file was automatically installed as part of a recent update. If you are experiencing any issues, you can manually download and reinstall.
This package contains the BIOS update for Dell Inspiron 3458 and 3558 systems that run the Windows operating system. BIOS is a firmware that is embedded on a small memory chip on the computer's system board. It controls the keyboard, monitor, disk drives and other devices.
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Fixes & Enhancements

Fixes:
- Fixed an issue with Secure Boot Option ROM Signature Verification.

Enhancements:
- Not Applicable.
Read More

Version

A18, A18

Release date

09 May 2019

Download Type

System BIOS

Category

BIOS

Importance

Critical
Dell Technologies highly recommends applying this important update as soon as possible. The update contains critical bug fixes and changes to improve functionality, reliability, and stability of your Dell system. It may also include security fixes and other feature enhancements.
Available formats
File Format: CPG BIOS Executable for Windows/DOS
File Name: 3458A18.exe
File Size: 5.11 MB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
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.
To ensure the integrity of your download, please verify the checksum value.
MD5:
dd36f702f4a0c89287e8fed4641e6f84
SHA1:
c59156a47feeeb9b30005a161e72c96056700332
SHA-256:
d05450abf2bca6ddba1c8289e7d20705f5840706fa345e7c9972ade21ec40c3d
File Format: External release notes
File Name: 3458A18_external.txt
File Size: 711 Bytes
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
This file format contains plain text which can be viewed with a standard text editor.
To ensure the integrity of your download, please verify the checksum value.
MD5:
ad20c17a51416d8e04650e870d46ba3b
SHA1:
63de73a57e14acb7493fe9add107c28d130c4f4c
SHA-256:
bc734add52d531f0460d9718e50e1a9dab5a602c62aa2bad2034e7f44d45677a

By downloading, you accept the terms of the Dell Software License Agreement.

Additional details

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Dell Inspiron 3458/3558
Updating the BIOS from Windows

Note 1: Before updating the BIOS, ensure that you suspend BitLocker encryption on a BitLocker-enabled system. If BitLocker is not enabled on your system, you can ignore this step.
Note 2: Do not turn off the power or interrupt the BIOS update process during the update.

Download and Installation
1. Click Download File, to download the file.
2. Click Save to save the file to your hard drive.
3. Browse to the location where you downloaded the file and double-click the new file.
The system restarts automatically and updates the BIOS at the system startup screen. After the BIOS update is complete, system restarts again.

Need help with BIOS issues?

Find a solution in Dell's BIOS troubleshooting guide

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