BIOS might be fraudulent

For specific question, a specific system model must be provided.  But, in general, cyber criminals can gain access to the BIOS from many different points of entry. An attack can happen through direct physical access to the device or even through a simple email.  In most cases, users are the conduits, whom inadvertently introduced system access to the attackers. 

Dell and Intel are working together to protect system BIOS firmware through a variety of built-in security features.  These capabilities include Intel Hardware Shield, Intel BIOS Guard, Intel Boot Guard.

For commercial customers, Dell devices are shipped with SafeBIOS, a collection of capabilities that help prevent BIOS attacks, detect potential compromise and respond by alerting IT if irregularities are found. Dell integrates post-boot BIOS verification into product lines of OptiPlex, Latitude, Precision.  Dell SafeBIOS also automates the early detection of BIOS events and high-risk actions with Indicators of Attack, another exclusive feature from Dell. It was designed to continuously extraction and analysis of changes in BIOS configurations and events to surface vulnerable endpoints for remediation before the fleet is infected.

Note:  information and flowchart are gathered through research from resources on internet.

Thank you for the input. I am not a commercial customer, am using Windows 10 Home. The computer is an Inspiron 3650. I was hoping someone might have seen this BIOS version/release mismatch. I would like to fix this computer if possible.

Inspiron 3650 is a 2016 desktop model, powered by 6th gen Intel processors.  While it's a good habit to keep all drivers up-to-date, flashing the BIOS unnecessarily would taken more risk of damaging your system than seeing any substantiate benefits.  Especially if you are unfamiliar with BIOS update process.

What was the issue that prompted you to update the BIOS?  Provide the version of BIOS with issue and your current version. 

Knowing the answer that a computer can be compromised at BIOS level, what is your plan?  Unless you are a very important person and your computer contains valuable, top secret information, the chance of your computer being targeted by hackers is absolutely zero. 

My question remains unanswered.  My computer systeminfo reports a bios version and release date that DOES NOT MATCH the information that Dell Provides for my model and service tag on the Dell website.

What is Dell's stance on this issue?  Is Dell okay with this version and release date mismatch?

It might help us understand the issue if you post the exact BIOS version number and date shown by running msinfo32.exe on your PC, and the BIOS version number and date shown on Dell's support page when using your service tag.

NOTE: The date shown in msinfo32.exe is the date the BIOS was created, not the release date shown on the Support page for that same BIOS version. FWIW, msinfo32.exe says the BIOS installed on my XPS 8930 is dated 3-14-23, but the release date shown on the Support page for this PC model is 7-13-23. 

So there can be several months between the creation date and the release date, which likely reflects the time needed to test the new BIOS before it's released to users...

For the out of warranty 8 year old Inspiron 3650, the last BIOS released by Dell was in 2021, version 3.12.1. If that was installed successfully, you are fine, regardless to what systeminfo reports.

MB may not be the original.