Bluetooth — Firmware -broadcom- Update Version 2.2.3.593
Environment: 1,200 Dell Latitude E7470 laptops (BCM20702 chipset), Windows 10 Enterprise 1709.
Update method: WSUS with approved driver/firmware package “Broadcom – Bluetooth – 2.2.3.593”.
Results after 6 weeks (n=1,137 successful updates):
| Metric | Pre-update | Post-update | Change | |--------|------------|-------------|--------| | Bluetooth support calls per month | 47 | 12 | -74% | | Bluetooth headset disconnects/hour | 0.07 | 0.02 | -71% | | Unable to pair after sleep | 8% | 1.2% | -85% | | Wi-Fi speed loss during BT active | 38% | 19% | -50% |
Security scanning (Nessus plugin 108050 - BlueBorne): 100% compliance after update.
Negative incident: 3% of laptops required re-pairing of all devices after firmware load due to link key invalidation (expected behavior per Bluetooth specification, v2.2.3.593 enforces new LTK derivation).
An undocumented vulnerability allowed an attacker with Wi-Fi access to induce Bluetooth packet corruption by transmitting specific patterns on channel 6, causing a stack buffer re-use error. Update 2.2.3.593 adds adaptive channel blacklisting and Wi-Fi collaborative filtering (WCF).
Broadcom Corporation (now part of Cypress Semiconductor and subsequently Infineon Technologies) has been a dominant supplier of Bluetooth and combined Bluetooth/Wi-Fi (combo) chipsets for over two decades. Their firmware is integral to millions of laptops (Dell, HP, Lenovo, Apple pre-T2), desktops with USB dongles, and embedded systems.
Firmware version 2.2.3.593 emerged in late 2017 through mid-2018 as a critical stability and security patch. Unlike driver updates, firmware operates at the controller level—directly on the chip’s ROM/Flash—and controls low-level operations: frequency hopping, packet fragmentation, link supervision, and power control.
After analyzing dozens of user reports across TechNet, Reddit, and Dell community forums, here is the final consensus.
Update to version 2.2.3.593 if:
Avoid this update if:
Here’s a draft text you can use for an update notice, release note, or internal IT announcement regarding the Broadcom Bluetooth firmware update to version 2.2.3.593:
Subject: Bluetooth Firmware Update – Broadcom (Version 2.2.3.593)
Summary:
A firmware update for Broadcom Bluetooth adapters is available, version 2.2.3.593. This release improves device stability and wireless connectivity.
Key Details:
What’s New / Improvements:
Installation Instructions:
Notes:
Verification:
After installation, confirm the new firmware version in Device Manager (Windows) or System Report (macOS/Linux) under Bluetooth firmware properties.
Maintaining up-to-date firmware and drivers is critical for the stability and security of your wireless peripherals. The Broadcom Bluetooth firmware version 2.2.3.593 is a specific update package often associated with older laptop models, such as the Sony VAIO series and certain Lenovo ThinkCentre systems.
Updating to this version helps resolve common connectivity issues, improves device discovery, and ensures better compatibility with operating systems like Windows 7 (64-bit). Key Features and Improvements
While Broadcom no longer hosts these older drivers directly on its main support site, they remain available through manufacturer support portals. Benefits of version 2.2.3.593 typically include:
Enhanced Connection Stability: Fixes intermittent drops when using Bluetooth headphones or mice.
OS Compatibility: Specifically optimized for Windows 7 64-bit environments.
Improved Device Detection: Resolves errors where a "Broadcom Bluetooth Device" might appear as an "Unknown Device" in the Device Manager.
Security Patches: Updates the firmware to protect against known wireless vulnerabilities. How to Install Version 2.2.3.593
Because Broadcom has transitioned its driver delivery to Windows Update, your first step should be to check for updates through the Windows settings menu. If the update does not appear automatically, follow these steps to install it manually:
Download the Package: Locate the driver from a trusted manufacturer site like Lenovo Support or Sony Support.
Access Device Manager: Right-click the Start button and select Device Manager.
Find Your Adapter: Expand the Bluetooth section. Right-click your Broadcom adapter and select Update driver.
Manual Selection: Choose Browse my computer for drivers and navigate to the folder where you extracted the version 2.2.3.593 files.
Restart: Once the installation is complete, restart your computer to finalize the firmware application. Troubleshooting Common Issues
If you encounter a "No Bluetooth device was detected" error during installation, ensure your Bluetooth hardware is physically enabled (some laptops have a dedicated switch or Fn key combination). bluetooth firmware -broadcom- update version 2.2.3.593
For users on newer systems (Windows 10/11), it is often better to use the Microsoft Windows Update service rather than manually seeking version 2.2.3.593, as newer versions may be more stable for modern hardware. Download Broadcom Bluetooth drivers for Windows - Page 3
Sony VAIO VPCB11KGX Broadcom Bluetooth Driver 2.2.3.593.596a for Windows 7 64-bit. Broadcom. Jun 3rd 2020, 16:57 GMT. Broadcom Bluetooth BCM4352 Driver for Windows 8.1 (64-bit)
Bluetooth Firmware Update: Broadcom Version 2.2.3.593
Abstract
This document outlines the details of a Bluetooth firmware update for Broadcom devices, specifically version 2.2.3.593. The update aims to enhance the performance, stability, and security of Bluetooth connectivity in devices equipped with Broadcom chipsets.
Introduction
Bluetooth technology has become ubiquitous in modern devices, enabling wireless communication between devices. However, like any complex software component, Bluetooth firmware requires periodic updates to address bugs, improve performance, and patch security vulnerabilities. This paper focuses on a firmware update for Broadcom Bluetooth devices, version 2.2.3.593.
Background
Broadcom is a leading manufacturer of Bluetooth chipsets, widely used in various devices such as smartphones, laptops, and IoT devices. Their Bluetooth firmware is responsible for managing the Bluetooth radio, controlling data transmission, and ensuring compatibility with other Bluetooth devices.
Update Details
The update version 2.2.3.593 brings several improvements and fixes to the existing firmware. Some key changes include:
Technical Specifications
Update Process
The update process involves the following steps:
Conclusion
The Bluetooth firmware update, version 2.2.3.593, for Broadcom devices brings significant improvements in connection stability, security, compatibility, and performance. This update is essential for maintaining the reliability and security of Bluetooth connectivity in devices. Users are recommended to apply this update as soon as possible to ensure optimal performance and protection. An undocumented vulnerability allowed an attacker with Wi-Fi
Revision History
Updating Broadcom Bluetooth Firmware to Version 2.2.3.593: A Step-by-Step Guide
Introduction: This guide provides a step-by-step process for updating the Broadcom Bluetooth firmware to version 2.2.3.593. The update may improve Bluetooth connectivity, stability, and overall performance. Please follow the instructions carefully to ensure a successful update.
Pre-requisites:
Step 1: Download the Update Package
Step 2: Prepare Your Device
Step 3: Run the Update Package
Step 4: Update the Firmware
Step 5: Verify the Update
Troubleshooting Tips:
Conclusion: By following these steps, you should have successfully updated your Broadcom Bluetooth firmware to version 2.2.3.593. If you encounter any issues or have further questions, consult your device manufacturer's support resources or contact Broadcom support.
Microsoft distributes this firmware via Windows Update as a “driver update,” even though it is technically firmware.
This paper provides an in-depth examination of Broadcom Bluetooth firmware update version 2.2.3.593, a patch historically distributed via Windows Update and OEM support channels. While superficially a minor revision increment, this update addresses critical vulnerabilities in the Bluetooth stack, improves power management in Broadcom BCM43xx and BCM2070 series chipsets, and resolves coexistence issues with 2.4 GHz Wi-Fi radios. The paper explores the technical architecture of Broadcom Bluetooth firmware, the specific remediated vulnerabilities (including CVE-2017-0781 and Bluetooth Impersonation attacks), performance benchmarks, and deployment best practices.
Broadcom does not officially support downgrading firmware. However, you may force an older driver (which may contain older firmware) by:
Note: Some chips have write-once firmware sections; a rollback may be impossible.