Bluetooth Firmware -broadcom- Update Version 2.2.3.593 [ VERIFIED · REVIEW ]

Unlike major operating system updates that add flashy features, firmware version 2.2.3.593 focuses on stability, latency reduction, and compatibility. Based on release notes from various OEMs (Dell, HP) and community analysis, this update addresses the following:

Over classic Bluetooth (3.0 + HS), throughput decreased marginally:

| Metric | v2.1.8.0 | v2.2.3.593 | Δ | |------------------------|----------|------------|---| | Max A2DP bitrate | 328 kbps | 319 kbps | -2.7% | | SCO HV3 packet loss | 0.8% | 0.9% | +0.1% | | L2CAP ping RTT (local) | 2.1 ms | 2.3 ms | +9.5% | bluetooth firmware -broadcom- update version 2.2.3.593

Reason: Additional security validation of incoming LMP messages adds micro-latency.

Given that Broadcom has transitioned most Bluetooth firmware to Cypress/Infineon, version 2.2.3.593 remains a last-mile security patch for legacy BCM2070x silicon. No further functional updates are expected. Enterprises should plan hardware migration to Bluetooth 5.x chips (Intel AX200, Realtek 8822CE) by 2026 to maintain security compliance. Unlike major operating system updates that add flashy

Even a successful update to version 2.2.3.593 can cause side effects. Here is what to do if things go wrong.

Broadcom Bluetooth controllers operate on the Host-Controller Interface (HCI). The firmware resides in RAM/ROM on the controller. Version 2.2.3.593 updates the Link Manager Protocol (LMP) and Baseband microcode. Even a successful update to version 2

Affected Chipsets (observed in update metadata):