ASUS ZenWiFi BT6
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BIOS & FIRMWARE

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Firmware
ASUS ZenWiFi BT6_Firmware Version 3.0.0.6.102_58542
Version 3.0.0.6.102_58542
63.75 MB
2026/08/27
SHA-256 :7350A71BE3FF33E8A9EFC26551879850EE78A24BEBBB49027928BB1515024545

Bug Fixes and Enhancements
Support LED scheduler capabilities.
Improved client list update flow and related UI responsiveness.
Improved configuration matching accuracy in specific scenarios.
Improved AiMesh stability.
Improved IPv6 connectivity stability in selected reboot/reconnect scenarios.
Fixed specific LAN/UPnP behavior issues after setup.

Security Fixes:
Applied multiple security hardening updates across system components.
Improved input validation and request-handling protections in selected paths.
Included security fixes in affected services/modules (including bundled components).
Added defenses for memory-safety and injection-related risk patterns.

We recommend upgrading to this version to maintain optimal protection.

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ASUS ZenWiFi BT6 Firmware version 3.0.0.6.102_58405
Version 3.0.0.6.102_58405
63.36 MB
2026/05/06
SHA-256 :F2E011A32CE8780742F5F7FC5218012A318420C6FBCAC4E8183549531D565943

Security Fixes
- Enhanced DNS name handling to address a potential memory issue that could occur in rare cases during name format conversion, improving system security and robustness.
- Improved safeguards for execution modules to reduce the risk of substitution during certain processes.

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ASUS ZenWiFi BT6 Firmware version 3.0.0.6.102_58403
Version 3.0.0.6.102_58403
63.36 MB
2026/02/24
SHA-256 :917204671F50231044DD124FC20079649BEC2B05C98B4CAAFEAEC389A31E52BC

Improvements:
- Optimized Wi-Fi roaming stability for devices supporting 802.11k but not allowing 11v.
- Improved Wi-Fi roaming compatibility and stability for iOS 26 devices.
- Refined accessibility-related UI and interaction details.
- Improved overall remote connection stability.
- Improved system behavior when using System diagnostic on feedback page.
- Optimized LED accuracy for AiMesh Ethernet onboarding status.
- Fixed temporary disconnections during client roaming via roam-assist.

Bug Fixes:
- Fixed connection failures when using 5GHz 160MHz bandwidth.
- Fixed an issue preventing 5G WPS from enabling correctly.
- Fixed connectivity issues with NOW TV after configuration.
- Fixed incorrect connection status display for certain Wi-Fi devices.
- Fixed AiMesh nodes not displayed correctly in the device list.
- Fixed a disconnection issue that occurred after enabling the MAC Filter.
- Fixed main network connectivity issue when enabling IPv6 for both the main network and Smart Home Network.

Security Enhancements:
- Enhanced system API validation for stronger protection consistency.
- Strengthened command handling and system resource access controls.
- Improved system logging and security event recording mechanisms.

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ASUS ZenWiFi BT6 Firmware version 3.0.0.6.102_58272
Version 3.0.0.6.102_58272
71.53 MB
2025/10/27
SHA-256 :03FA81B271769FDB1CB079829CBC420A3A50D65544031D12D3074830652CE25C

- Enhanced system stability.
- Enhanced input validation and refactored legacy string handling routines to ensure robust memory management.
- Mitigated security risks in AiCloud service by enforcing strict credential verification, implementing robust file path validation, and hardening command execution logic to prevent unauthorized access and manipulation of system resources.
- Implemented comprehensive validation and expanded command filtering in the web history API.
- Strengthened input validation and directory handling in the VPN configuration upload interface.
- Fixed an issue that allowed certain user settings to be bypassed, improving overall user control and protection.

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ASUS ZenWiFi BT6 Firmware version 3.0.0.6.102_58235
Version 3.0.0.6.102_58235
63.22 MB
2025/09/30
SHA-256 :A1C2359549DB6246EF54DD8910CA5EEF624927DC60B04C6EBA9025DFA5D2FD80

Important: After installing this firmware, we strongly recommend performing a factory-default reset to activate every new security adjustment.

Security Enhancements
- Password Policy Upgrade – Minimum of 10 characters, including at least one letter, one digit, and one special character; disallows consecutive identical characters; hardens defense against brute-force attacks.
- HTTPS on 8443 – Management interface now served over TLS by default.
- UPnP Disabled – Universal Plug and Play starts in the off state for reduced surface exposure.
- AiCloud Authentication Hardening (CWE-287) – Added layered verification.
- Authentication Logic Refactor – Removed redundant code paths for a lean sign-in flow.
- Memory Safety Guard (CWE-476) – Introduced null-reference protections across critical services.
- Enhanced IPsec Parameter Validation – The existing input checks have been hardened.
- Data Exposure Mitigation (CWE-200) – Reinforced controls on sensitive pathways.
- Detailed Audit Trails – Expanded logging within the authentication module.

System Improvements
- Connection Stability – Core algorithms refined for steadier links.
- Scheduling Accuracy – Timed tasks execute reliably under PPPoE, PPTP and L2TP WAN modes.
- Client List Maintenance – Resolved an issue that prevented offline devices from being removed from the client list
- Upload speed - Improve upload speed performance.
- Page buffering - Improve page loading speed.

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ASUS ZenWiFi BT6 Firmware version 3.0.0.6.102_56914
Version 3.0.0.6.102_56914
62.34 MB
2025/06/20
SHA-256 :6124E9AD885BB48FAC65507002053E8995F9043805F05BCBC9624CECBB2B828D

[Bug Fixes]
- Fixed an issue where the SSID was not discoverable by clients when configuring WPA2/WPA3 Enterprise security.
- Fixed an issue in AiMesh where nodes with an unideal uplink connection status were not being optimized after any node joined the router.
- Fixed a potential DNS Open Resolver vulnerability
- Fixed compatibility issue of MLO clients.
- Fixed a problem affecting 5 GHz connections when operating in repeater mode.
- Fixed an anomaly in the wireless scheduler functionality.
- Fixed an issue preventing the configuration of time scheduling for the guest network client.
- Fixed a potential crash issue related to prolonged usage of AiProtection.
- Fixed failed to limit bandwidth as intended.
- Fixed a problem where Now TV IPTV was unable to obtain an IP address.
- Fixed Now IPTV to malfunction due to incorrect firewall rules.
- Fixed a WiFi crash issue caused by certain feature configurations.

[Enhancements]
- Improved AiMesh and MLO stability.
- Improved the stability of IoT device connections.
- Improved Smart Home Master connectivity of nodes in the AiMesh system.
- Fixed connection fail issue when manually setting up WireGuard VPN.
- Added a "Hide Backhaul SSID" option. Enabling this option will disable the random SSID.
- Security updates.

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ASUS ZenWiFi BT6 Firmware version 3.0.0.6.102_56839
Version 3.0.0.6.102_56839
62.28 MB
2025/03/24
SHA-256 :6A5C9FD2EEA1B8157F08EBBEF56C2DC1BA7DF316A10B55F33F33FB684DC037E4

[New] WPA Encryption Setting
Including the option to select AES for improved client compatibility. (It can be found under "Network > Main Network")

[Enhancements]
- Improved AiMesh backhaul stability.
- AiMesh Node WAN port can be used as LAN.
- Enhanced security of system command processing to guard against potential malicious operations.
- Perfected JavaScript-related security mechanisms, offering a more secure web interaction environment.
- Strengthened input validation and data processing workflows to further protect information security.
- Enhanced AiCloud password protection mechanisms, safeguarding against unauthorized access attempts.
- Enhanced input parameter handling techniques to improve data processing stability and system security.
- Enhance system access control mechanisms.
- Optimized memory management mechanisms, improving system efficiency and stability.

[Bug Fixes]
- Fixed connectivity issue with Apple wireless devices.
- Fixed the UI compatibility issue with the Chrome browser update.
- Fixed UI issues during VPN file export.
- Fixed irregularities in AiProtection.
- Fixed client binding issues in Mesh scenarios.
- Fixed Smart home Master profile can not connect to the internet after appling AdGuard.
- Fixed LAN device disconnections after SDN configuration.
- Fixed an issue that could lead to system failures following a reboot.
- Fixed wireless network settings page disappears in AP mode on the WebGUI.
- Fixed the issue where devices do not appear in the client list after connecting to the ASUS router.
- Fixed compatibility issues with older models, preventing WiFi malfunctions after SDN settings.

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ASUS ZenWiFi BT6 Firmware version 3.0.0.6.102_56789
Version 3.0.0.6.102_56789
62.27 MB
2025/01/03
SHA-256 :F51323F66C1FD9EFCA411A884BA2428BC5A2428EA42835112136BF62695FE49F

Bug Fixes and Enhancements:
- Improved AiMesh and MLO stability.
- Improved connectivity of IoT devices.
- Improved Smart Home Master connectivity of nodes in the AiMesh system.
- Fixed failed to limit bandwidth as intended.
- Fixed compatibility issue of MLO clients.
- Fixed connection fail issue when manually setting up WireGuard VPN.
- Security updates.

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  • Products certified by the Federal Communications Commission and Industry Canada will be distributed in the United States and Canada. Please visit the ASUS USA and ASUS Canada websites for information about locally available products.
  • All specifications are subject to change without notice. Please check with your supplier for exact offers. Products may not be available in all markets.
  • Specifications and features vary by model, and all images are illustrative. Please refer to specification pages for full details.
  • PCB color and bundled software versions are subject to change without notice.
  • Brand and product names mentioned are trademarks of their respective companies.
  • The terms HDMI and HDMI High-Definition Multimedia Interface, HDMI trade dress and the HDMI Logos are trademarks or registered trademarks of HDMI Licensing Administrator, Inc. in the United States and other countries.
    • The actual transfer speed of USB 3.0, 3.1, 3.2, and/or Type-C will vary depending on many factors including the processing speed of the host device, file attributes and other factors related to system configuration and your operating environment.
    • Actual data throughput and WiFi coverage will vary from network conditions and environmental factors, including the volume of network traffic, building material and construction, and network overhead, result in lower actual data throughput and wireless coverage.
    • Quoted network speeds and bandwidth based on current IEEE 802.11ac specifications. Actual performance may be affected by network and service provider factors, interface type, and other conditions. Connected devices must be 802.11ac-compatible for best results.
    • WPA/WPA2 enterprise is only available on single router, is not available under AiMesh mode.
    • When traditional QoS is enabled, there will be limitations due to the actual Internet service bandwidth and different environment, and there may be a risk of speed reduction.
    • Due to the different power supply requirements on USB external hard disk and 4G/5G Modem device, to ensure that the external device can be used stably, if the USB external device exceeds the standard USB 2.0 (5V/500mA) and USB 3.1 Gen 1 (5V/900mA) power supply requirements, you need to use it with an independent external power supply.
    • If you use the product in conjunction with a third party service, you are responsible for complying with the third party provider's terms and conditions and privacy policy and are also at the risk of such use. ASUS does not provide support or guarantee continuous integration support for products that are not part of ASUS.
    • The device is restricted to indoor use only when operating in the 5150-5350 MHz frequency band in certain regions, including the EU, Asia-Pacific countries, Australia, and Canada. Outdoor use in this band may be prohibited or require regulatory approval. Check local regulations before deployment.
    • For models with Time machine support, starting with macOS 26 (Tahoe), Time Machine no longer supports creating new backups on USB-connected storage devices. Existing Time Machine drives that were previously configured remain compatible and can continue to be used for backup and restoration.