> For the complete documentation index, see [llms.txt](https://docs.morsemicro.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.morsemicro.com/software-releases/halowlink2-software-release-notes.md). # HaLowLink2 Software Release Notes Download as PDF ## 1 Overview This document describes the software changes included in release 2.11.13 of the HaLowLink 2 OpenWrt software package. HaLowLink 2 is Morse Micro's Wi-Fi HaLow (802.11ah) access point and extender platform, designed for long-range, low-power IoT connectivity. The software runs on OpenWrt and is managed through the device's web-based user interface. Release 2.11.13 addresses security compliance improvements by updating the MM8108 driver and firmware. Customers running v2.11.12 or v2.11.8 are encouraged to upgrade. To upgrade your device, navigate to the Upgrade page in the web UI. An active internet connection is required. ## 2 Software Change Summary ### 2.1 Release 2.11.13 Release 2.11.13 is a maintenance release for HaLowLink 2 following release v2.11.12. It updates the MM8108 driver and firmware package to version 1.17.9, which fixes the reported security vulnerabilities. There are no new end-user features in this release. #### 2.1.1 New Features * There are no new features in this release. The MM8108 driver and firmware have been updated to version 1.17.9; this update delivers the security improvements described below and introduces no new end-user functionality. * For a full list of MM8108 driver features, refer to the MM8108 Linux Software Release Notes (1.17.9). #### 2.1.2 Resolved Issues and Improvements **2.1.2.1 Security compliance improvements** * Hardened parsing of 802.11 management-frame information elements (IEs) against malformed input: * Added bounds validation for vendor-specific IE lengths, preventing out-of-bounds reads. * Protected against a buffer overflow when parsing the Traffic Indication Map (TIM) information element. * Protected against a buffer overflow when parsing the S1G Capabilities information element. #### 2.1.3 Known Issues All known issues reported in release 2.11.12 are carried forward unchanged into 2.11.13; this release does not resolve any of them. They are listed again below for completeness. **2.1.3.1 Unbalanced downlink distribution in multi-STA scenarios** * In multi-STA setups, an unbalanced downlink distribution may be observed when traffic is sent simultaneously to more than four stations, with the first two associated stations potentially monopolizing the medium. * Workaround: Enable airtime fairness on the HaLowLink 2 (enable\_airtime\_fairness=1). **2.1.3.2 Receive degradation at 2 MHz near -73 dBm RSSI** * Some degradation is observed at 2 MHz, with an RSSI of approximately -73 dBm. * Workaround: Increase or decrease the RSSI by 2 dB to resolve this issue. **2.1.3.3 Receive degradation at 1 MHz at strong signals** * Some degradation is seen at 1 MHz at strong signal levels. * Workaround: Move the devices farther apart to lower the signal strength. **2.1.3.4 Intermittent STA association failure at very close range** * When pairing two devices at very close range, the STA may intermittently fail to join the HaLowLink 2 due to excessively strong received signal levels (greater than -10 dBm). * Workaround: Ensure a minimum separation of 2 meters between the HaLowLink 2 and STA before initiating the pairing sequence to maintain reliable association. An improvement is planned for a future firmware release. ### 2.2 Release 2.11.12 Release 2.11.12 is the first maintenance release for HaLowLink 2 following the production release v2.11.8. It includes security compliance improvements, stability fixes for high-density deployments, and an updated MM8108 driver and firmware package. There are no new end-user features in this release. #### 2.2.1 New Features * There are no new features in this release. The MM8108 driver and firmware have been updated to version 1.17.8; however, all features introduced in that driver version were already available in the HaLowLink 2 production release v2.11.8. * For a full list of MM8108 driver features, refer to the MM8108 Linux Software Release Notes v2 (1.17.8). #### 2.2.2 Resolved Issues and Improvements **2.2.2.1 Security compliance improvements** * Updated OpenSSL configuration to meet current security standards, ensuring compatibility with stricter TLS requirements and audit criteria. * Addressed a CWE-125 security weakness. **2.2.2.2 Multi-STA performance** * Multi-STA performance has been improved for up to 8 stations. * Improved interference performance in AP mode: beacon transmission is now maintained under high levels of adjacent-channel interference. * Enhanced stability in high-density deployments: resolved a firmware crash that could occur when operating with 32 or more connected STAs. **2.2.2.3 Documentation** * The user guide now lists all open network ports, with justification and usage context for each. #### 2.2.3 Known Issues **2.2.3.1 Unbalanced downlink distribution in multi-STA scenarios** * In multi-STA setups, an unbalanced downlink distribution may be observed when traffic is sent simultaneously to more than four stations, with the first two associated stations potentially monopolizing the medium. * Workaround: Enable airtime fairness on the HaLowLink 2 (enable\_airtime\_fairness=1). **2.2.3.2 Receive degradation at 2 MHz near -73 dBm RSSI** * Some degradation is observed at 2 MHz, with an RSSI of approximately -73 dBm. * Workaround: Increase or decrease the RSSI by 2 dB to resolve this issue. **2.2.3.3 Receive degradation at 1 MHz at strong signals** * Some degradation is seen at 1 MHz at strong signal levels. * Workaround: Move the devices farther apart to lower the signal strength. **2.2.3.4 Intermittent STA association failure at very close range** * When pairing two devices at very close range, the STA may intermittently fail to join the HaLowLink 2 due to excessively strong received signal levels (greater than -10 dBm). * Workaround: Ensure a minimum separation of 2 meters between the HaLowLink 2 and STA before initiating the pairing sequence to maintain reliable association. An improvement is planned for the next firmware release. ## 3 Revision History | Release Number | Release Date | Release Notes | | -------------- | ------------ | ----------------------- | | Version 2 | 4 Jun 2026 | Release OpenWrt 2.11.13 | | Version 1 | 24 Apr 2026 | Release OpenWrt 2.11.12 | Morse Micro provides this information "as is" without warranties of any kind, express or implied. No guarantee is made as to the accuracy, completeness, or suitability of this information or Morse Micro’s products for any specific purpose. Use of this information and products is at the user’s sole risk. Morse Micro products are not designed or tested for use in mission-critical systems, and should not be used in such applications. Performance specifications are based on internal testing and are believed to be reliable; however, they are not guaranteed. It is the Buyer’s responsibility to test and validate all product performance, compatibility, and compliance, both in isolation and within end applications. Morse Micro assumes no liability for the use or application of any product, circuit, or information described herein. No license or other rights—express or implied—are granted under Morse Micro’s intellectual property. This document contains proprietary information of Morse Micro and is subject to change without notice. Wi-Fi®, Wi-Fi HaLow™, and the Wi-Fi logo are trademarks of Wi-Fi Alliance. ZigBee™ and Z-Wave™ are trademarks of their respective owners. All other trademarks are the property of their respective owners.