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 Precision 3560 and Latitude 5520 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.
To view all drivers for your Latitude 5520, go to Drivers and downloads.
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Precision_3560_Latitude_5520_1.24.3.exe | 44.64 MB
Enter the Service Tag of your device to check the compatibility of this download with your device.
This is a large file. Depending on your connection speed, it may take some time to download.
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File Format: CPG BIOS Executable for Windows/DOS
File Name: Precision_3560_Latitude_5520_1.24.3.exe
File Size: 44.64 MB
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:
b26ba36afa50a54af5743d23bc9b75c4
SHA1:
ed2438596d72b63f4f8be37430879885e4a6cf60
SHA-256:
5e7d9b24e3836fbc8b7d0b1a41795966cbc6687191af3ddb95208986cdc5d14b

Find more updates. Use SupportAssist to find all the latest driver updates for your device.

Fixes & Enhancements

- This release contains security updates as disclosed in the Dell Security Advisory DSA-2023-010. For more information, see Dell Security Advisories and Notices.
- Fixed the issue where the network disconnects when the system is connected through USB type-C port.
- Fixed the issue where Reboot Bypass does not work after rebooting the system. This issue occurs when you set Password Bypass from Disable to Reboot Bypass in the BIOS setup menu and install Dell Command Monitor (DCM) version 10.7.0.232.
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Version

1.24.3, 1.24.3

Release date

16 Nov 2022

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.
View Important Information
File Format: External release notes
File Name: Third-party License.txt
File Size: 1.17 KB
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:
fcf94f322af0e9ea2c8e7653119f536e
SHA1:
38221f0be18db3b392359d21beda45372a48f723
SHA-256:
6712dba91fdc70396b373e98587ec4669e8c8b0e24e1bcda8dce94e11c96abd4

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

Additional details

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- Once the BIOS is upgraded to version 1.12.2 or later, 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.
1.47.011 Nov 2025
1.46.010 Sept 2025
1.45.215 Aug 2025
1.44.110 Jun 2025
1.43.014 Apr 2025
1.42.012 Feb 2025
1.41.017 Dec 2024
1.40.012 Nov 2024
1.39.008 Sept 2024
1.38.008 Jul 2024
1.37.011 Jun 2024
1.36.009 Apr 2024
1.30.014 Aug 2023
1.29.012 Jul 2023
1.28.113 Jun 2023
1.27.011 Apr 2023
1.26.221 Mar 2023
1.25.112 Jan 2023
1.21.016 Aug 2022
1.20.008 Jul 2022
1.19.115 Jun 2022
1.18.109 May 2022
1.17.213 Apr 2022
1.15.224 Jan 2022
1.13.011 Nov 2021
1.12.222 Sept 2021
1.11.126 Aug 2021
1.10.021 Jul 2021
1.8.101 Jul 2021
1.7.121 Jun 2021
1.6.003 May 2021
1.5.112 Apr 2021
1.4.216 Mar 2021
1.3.005 Mar 2021
1.2.721 Jan 2021
1.0.204 Jan 2021
INFO,RYLTY,INSYDE,AGS,BIOS,NBK
Latitude 5520;Precision 3560
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 new file.
The system restarts automatically and updates the BIOS at the system startup screen. After the BIOS update is complete, system restarts again.

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 it 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 Flash Update in the Other Options section.
6. Click the ... button to browse the USB drive to locate the downloaded file.
7. Select the file and click Ok.
8. Verify the existing system BIOS information and the BIOS update information.
9. Click Begin Flash Update.
10. Review the Warning message and click Yes 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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