Bluetooth Firmware -broadcom- Update Version 2.2.3.593 -
Following the update, users reported intermittent cursor freezes lasting 2–5 seconds on Windows 10 (v1709). Investigation revealed that the firmware’s new authentication frame check erroneously discarded valid encrypted HID report packets with slightly malformed MIC (Message Integrity Check). Broadcom issued a hotfix (2.2.3.600) for OEMs, but version 2.2.3.593 remains in the standard update channel.
Firmware version 2.2.3.593 is not universal. It specifically targets Broadcom Bluetooth chips with a hardware ID (VID/PID) that matches certain ranges. You can check your device via Device Manager (Windows): bluetooth firmware -broadcom- update version 2.2.3.593
If you see values like:
...then version 2.2.3.593 is likely intended for your chip. If you see values like:
Common hardware that uses this firmware: Following the update
Cause: Version 2.2.3.593 changes the polling interval to be more power-efficient, which conflicts with some older mouse firmware.
Solution:
