Bluetooth Firmware -broadcom- Update Version 2.2.3.593 Page
Important assumptions and notes
Quick checklist
If you want, tell me the OS and exact Broadcom device/VID:PID and I’ll produce exact commands and a step-by-step command sequence for your setup.
Broadcom Bluetooth firmware version 2.2.3.593 is a legacy update primarily associated with Broadcom’s WIDCOMM Bluetooth stack, often found in older systems like the Sony VAIO laptop series. This version is typically packaged as part of a larger driver update to ensure compatibility with Windows 7 (64-bit) systems. Technical Specifications & Architecture
Release Purpose: To provide stable connectivity for Broadcom Bluetooth adapters (e.g., BCM2070, BCM43142) on legacy Windows platforms.
Firmware Delivery Method: Broadcom utilizes a RAMUSB system for many of its Bluetooth devices. The firmware blob is uploaded to the device’s volatile RAM at every system startup by the driver.
Compatibility: Designed for Windows 7, but often serves as the base for extracted .hcd (HCD - Host Controller Data) files used in Linux and macOS open-source patching projects. Key Improvements in Version 2.2.3.x Series
While specific changelogs for sub-version .593 are rarely publicized, general updates in this version branch focused on:
Connectivity Stability: Resolving "Headset AG" connection conflicts where headsets would fail to reconnect after being previously paired to the same device.
Performance Optimization: Doubling the size of the SDK Service Discovery Protocol (SDP) database to improve record retrieval on 64-bit systems.
Security Fixes: Addressing common memory leaks in OBEX (Object Exchange) header manipulation and adding thread protection to prevent crashes during callback operations.
Operating System Support: Specifically refining the handshake between the Broadcom stack and the Microsoft Bluetooth stack in Windows Vista and 7 environments. Modern Context & Risks
Security Vulnerabilities: As Broadcom has ceased active support for many of these older consumer Bluetooth devices, version 2.2.3.593 remains vulnerable to modern exploits like KNOB (Key Negotiation of Bluetooth) and BIAS (Bluetooth Impersonation Attacks). bluetooth firmware -broadcom- update version 2.2.3.593
Cross-Platform Portability: This firmware is frequently extracted from Windows drivers for use in Linux distributions under /lib/firmware/brcm/ to fix "Bluetooth not found" errors.
For ongoing support and official documentation, you can visit the Broadcom Support Portal. Download Broadcom Bluetooth drivers for Windows - Page 3
Sony VAIO VPCB11GGX Broadcom Bluetooth Driver 2.2.3.593.596a for Windows 7 64-bit. Broadcom. May 29th 2020, 11:24 GMT. Support Documents and Downloads - Broadcom Inc.
The btusb kernel module did not initially recognize version 2.2.3.593’s HCI revision number. Users had to manually patch:
echo 0a5c 21e8 > /sys/bus/usb/drivers/btusb/remove_id
modprobe -r btusb
modprobe btusb
Workaround resolved in kernel 4.15+.
Broadcom Bluetooth Firmware Update 2.2.3.593: What You Need to Know
Broadcom's Bluetooth firmware version 2.2.3.593 is a specific legacy update designed primarily for older laptop models and integrated Bluetooth adapters. While newer Broadcom hardware now receives updates directly through the Microsoft Update Catalog, version 2.2.3.593 remains a critical driver for maintaining connectivity on specific machines like the Sony VAIO VPCB11NGX series. Key Features and Compatibility
This firmware version was specifically released to address stability and device discovery issues in Windows 7 (64-bit) environments. It is often bundled as part of a larger driver package to help the operating system communicate with Broadcom's WIDCOMM® Bluetooth hardware.
Primary Device Support: Primarily targeted at Sony VAIO series, but often compatible with various Broadcom-based Bluetooth 2.1 and 3.0 adapters found in early-2010s laptops.
Performance Improvements: Aims to fix device errors, improve pairing consistency, and resolve common "Bluetooth not found" issues.
Security Context: Users should note that Broadcom has largely stopped active support for older consumer devices. Using legacy firmware like 2.2.3.593 may not protect against modern vulnerabilities like BIAS or KNOB. How to Install or Update
If your system requires this specific version, you can typically find the download for Broadcom Bluetooth drivers on Softpedia or through your laptop manufacturer's support page. To update your driver on a modern Windows system: Open Device Manager by right-clicking the Start button. Expand the Bluetooth section. Right-click your Broadcom adapter and select Update driver. Important assumptions and notes
Choose Search automatically for drivers to see if Windows Update can pull a newer, compatible version from Microsoft's servers. Troubleshooting Connectivity
If you have installed the update and Bluetooth is still not appearing, it may be a hardware toggle issue. Many legacy laptops require a physical switch or a specific software manager (like the HP Connection Manager or Sony Control Center) to be enabled before the Bluetooth radio becomes "visible" to the driver.
For Linux users, similar firmware blobs are often managed through community repositories like the broadcom-bt-firmware project on GitHub, which provides the .hcd files necessary for the Linux kernel to initialize these adapters.
Do you need help identifying your specific hardware ID to ensure this version is the right match for your device? Download Broadcom Bluetooth drivers for Windows - Page 3
Sony VAIO VPCB11NGX Broadcom Bluetooth Driver 2.2.3.593.596a for Windows 7 64-bit. Broadcom. May 29th 2020, 19:29 GMT.
winterheart/broadcom-bt-firmware: Repository for ... - GitHub
Bluetooth Firmware Update: Broadcom Version 2.2.3.593
We are pleased to announce the availability of a new Bluetooth firmware update for Broadcom devices, bringing the version to 2.2.3.593. This update is designed to improve the performance, stability, and security of your Bluetooth connectivity.
Key Features and Fixes:
Benefits of this Update:
By updating your Bluetooth firmware to version 2.2.3.593, you can expect:
How to Update:
To update your Bluetooth firmware, please follow these steps:
Version Details:
Support:
If you encounter any issues during the update process or have questions about this firmware update, please don't hesitate to contact our support team for assistance.
By updating your Bluetooth firmware, you can ensure optimal performance, security, and compatibility for your device. Thank you for choosing Broadcom for your Bluetooth solutions!
With Microsoft deprecating its old Bluetooth stack in favor of a new unified stack (starting Windows 10 version 1809), many Broadcom chips exhibited wake-from-sleep failures. This firmware update patches the HCI (Host Controller Interface) layer to fully comply with Microsoft’s updated requirements.
Older Broadcom firmware (pre-2.2.x) often suffered from random disconnections when paired with BLE devices like mice, heart rate monitors, or IoT sensors. Version 2.2.3.593 introduces improved connection supervision logic, reducing the frequency of “device disconnected” errors.
Microsoft distributes this firmware via Windows Update as a “driver update,” even though it is technically firmware.
Broadcom’s “Bluetooth Low Energy (BLE) duty cycling” was recalibrated. In prior versions, the chip entered deep sleep too aggressively, causing connection drops with BLE mice and heart rate monitors. Version 2.2.3.593 introduces a dynamic connection supervision timer:
| Device Class | Pre-update reconnect latency | Post-update reconnect latency | |--------------|-----------------------------|-------------------------------| | BLE Mouse | 380 – 1200 ms | 180 – 340 ms | | BLE Keyboard | 450 – 1500 ms | 200 – 400 ms | | A2DP Headset | 220 ms | 210 ms (no regression) |
Idle power consumption (BCM20702 test): Increased by 0.8 mW under Windows 10 due to more frequent polling for security state checks.