V4.5.1.0 / 22-Jan-2026
1. Enable PAwR feature.
2. Added RF Test Mode for CW Unmodulated Signal: Transmit continuous 1 bits using direct frequency mode with 500kHz offset correction for PHY 2M to generate an unmodulated carrier at the correct frequency.

V4.4.3.0 / 03-Dec-2025
1. Enable BLEC's power control feature to fix pairing failure caused by not responding to LL_POWER_CONTROL_REQ initiated by Android 15 phones.

V4.4.2.0 / 15-Sep-2025
1. Updated LFRC configuration to maintain frequency accuracy across state transitions.

V4.4.1.0 / 03-Sep-2025
1. Improved RC calibration by adding a critical interrupt safe section preventing the system to enter into a deadlock.
2. Fixed Periodic Advertising synchronization issues with the Periodic Advertising Scanner.
3. New Enhanced Power Control algorithm for Link Layer managed transmit output power level.
4. Fixed link layer flow control field handling during receive buffers starvation.
5. Added a fix to prevent the EMB HCI going to sleep in case of longer latency between two consecutive Rx cycles of the same command.

Feature Availability Notice
CIS (Connected Isochronous Stream) support has been temporarily disabled following scheduler enhancements to improve isochronous stream handling. This adjustment ensures consistent performance across all PHY types, including LE Coded PHY, while CIS support is being refined for future releases.

V4.3.2.0 / 29-Apr-2025
1. Improved “power management” handling for RF spectrum optimization in voltage multiplier configuration.
2. Increase the size of the Resolvable Private Addresses (RPA) list to 11.

V4.3.1.0 / 10-Apr-2025
1. Allow EMSRC DTM Command to use max Tx Power and return correct max and actual power.
2. Fix sync timeout issue when running periodic advertising with CTE enabled.
3. Fix reception of max PDU length with CTE enabled for connections.
4. Fix for connection rejection when quickly reconnecting to a bonded device using RPA.
5. Always set RX max length to receive length to prevent RX FIFO overflow error.
6. Fix for returning requested Preferred Periodicity in Connection Parameter Update Response LLCP.


V4.2.1.0 / 17-Jan-2025
1. Correct issue with Minimum Number of Used Channels LLCP for both the Central and Peripheral GAP roles.
2. New Constant Tone Extension Transmitter feature for Connection-Oriented and Connectionless modes.
3. Radio optimizations to improve timing for Periodic Advertising, PAwR, BIS and CIS use-cases.
4. Fixed issues with RPA generation and restoring the bonded device.
5. Change TX/RX buffer size to 4 to resolve the slow data throughput issue.
