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 14 5435/16 5635 and Vostro 16 5635 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 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.
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Fixes & Enhancements

Fixes:
- This release contains security updates as disclosed in the Dell Security Advisories DSA-2023-177, DSA-2023-322, DSA-2023-325, DSA-2023-324, DSA-2023-323, DSA-2023-326, DSA-2023-199, DSA-2023-178, and DSA-2023-099. For more information, see Dell Security Advisories and Notices.
- Fixed the issue where the BIOS is not updated when you update BIOS in the WinPE operating system.
- Fixed the issue where the external monitor does not display the BIOS update progress when the system lid is closed and you update BIOS.
- Fixed the issue where a Windows error message is displayed during cold boot.
- Fixed the issue where Custom mode is not set as the default for Battery Charge Configuration. This issue occurs when you change the mode to another charging mode and select Custom mode again.

Enhancements:
- Reduced the fan noise to improve the user experience.
Read More

Version

1.6.1, 1.6.1

Release date

06 Oct 2023

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 View Important Information
File Format: CPG BIOS Executable for Windows/DOS
File Name: Inspiron_5435_5635_Vostro_5635_1.6.1.exe
File Size: 27.14 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:
7e030be4d85960d0149f75cf00c2d8cf
SHA1:
18bbe4a5a101524848f279a98e2dd80b9b326267
SHA-256:
303eb5e49d81c46373c9760b5e2b693d5d26dd0c69964b6a28f2aeafb0b32eed
File Format: BIOS Recovery Image File
File Name: BIOS_IMG.rcv
File Size: 18.12 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 Recovery image file. This file is used for the System BIOS Recovery process to recover a system from a corrupted BIOS.
To ensure the integrity of your download, please verify the checksum value.
MD5:
a09fbb4da7714a0282b15d8f136a9c4b
SHA1:
ecc55dd94226dd022429bcf6b2f8a52c8221efea
SHA-256:
27bf88bd8597096849e0c3156645c001bdbb2c06b0f411daf9b56c84b6c1f70f

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

Additional details

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- Once the BIOS is upgraded, you cannot downgrade the BIOS to earlier versions. BIOS downgrades are restricted when there are security updates and important fixes with earlier versions that impact the functionality of the system.
- BIOS updates take no more than 5 minutes to be installed on your system. You can install the updates in the background while using the system.
Inspiron 14 5435/ 16 5635
Vostro 5635
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. For information about how to disable BitLocker, see How to Enable or Disable BitLocker with TPM in Windows at support.dell.com.
Note 2: Do not turn off the power or interrupt the BIOS update process during the update.
Note 3: Your system requires a restart after installing the BIOS. The restart can be deferred but must be completed to ensure that the update is installed.

Download and Installation
1. Click Download File.
2. Click Save to save the file to your hard drive.
3. Browse to the location where you downloaded the file.
4. Double-click the file.
5. Click Yes to open the BIOS update utility.
6. Click Update to initiate the update process. A progress bar is displayed.
7. Click Restart to restart the system once the progress bar reaches 100%.
The update process initiates at the Dell logo and an update initiation message is displayed with a progress bar. The system shuts down after the update is complete.

Updating the BIOS from BIOS Boot Menu (independent of operating system)

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. For information about how to disable BitLocker, see How to Enable or Disable BitLocker with TPM in Windows at support.dell.com.
Note 2: Do not turn off the power or interrupt the BIOS update process during the update.
Note 3: Your system requires a restart after installing the BIOS. The restart can be deferred but must be completed to ensure that the update is installed.

Installation
1. Copy the downloaded file to a USB drive. The USB drive does not need to be bootable device.
2. Insert the USB drive into any USB port.
3. Power on the system.
4. At the DELL logo screen, press F12 to access the one-time boot menu.
5. Select BIOS Update in the section.
6. Click Flash from file to browse the USB drive to locate the downloaded file.
7. Select the file and click Submit.
8. Verify the existing system BIOS information and the BIOS update information.
9. Click Update BIOS.
10. Review the Warning message and click Confirm Update BIOS! to proceed with the update.
The system restarts and displays a progress bar at the Dell logo screen. The system restarts again when the update is complete.

Need help with BIOS issues?

Find a solution in Dell's BIOS troubleshooting guide

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