Bluetooth Firmware -broadcom- Update Version 2.2.3.593

Assuming you have downloaded the appropriate firmware update from your PC manufacturer:

The release notes were dry:

This firmware update is designed to improve the performance and reliability of Broadcom Bluetooth chipsets (including common modules like BCM2070, BCM20702, and BCM43142). It resolves several known connectivity issues and improves handshaking with modern Bluetooth 4.0/5.0 peripherals. Key Improvements & Fixes Enhanced Connectivity: bluetooth firmware -broadcom- update version 2.2.3.593

sudo apt install firmware-b43-installer