ASUS ZenWiFi ET9
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    BIOS & FIRMWARE

    • Driver & Tools
    • BIOS & FIRMWARE

    Firmware
    ASUS ZenWiFi ET9 Firmware version 3.0.0.4.388_25306
    Version 3.0.0.4.388_25306
    50.52 MB
    2026/05/22
    SHA-256 :9E7BADCF1F238A8F8765C2DB5DEFB12FA710993AE6F1BAAF792E251B23ABB810

    Security Fixes
    Enhanced DNS Handling: Improved DNS name processing to address potential memory issues that could occur in rare cases during name format conversion, enhancing system security and robustness.
    Strengthened Execution Module Safeguards: Improved protections for system execution modules to reduce the risk of unauthorized substitution during specific processes.

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    ASUS ZenWiFi ET9 Firmware version 3.0.0.4.388_25265
    Version 3.0.0.4.388_25265
    50.31 MB
    2025/10/29
    SHA-256 :9D9ACF41F4D5F8F0F3303E4CFBB71F9A0D42837FEFD86F6FA5163463D8DC3DF5

    - Enhanced system stability.
    - Enhanced input validation and refactored legacy string handling routines to ensure robust memory management.
    - Addressed multiple security weaknesses 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 ET9 Firmware version 3.0.0.4.388_25215
    Version 3.0.0.4.388_25215
    50.31 MB
    2025/05/14
    SHA-256 :11FF16756F5E0F2ABEA5EED16E232A909D56D0783849E7568D7A4FE0B2A4A2A5

    - Improved compatibility with certain IoT devices.
    - Optimized the app’s remote access capabilities for a smoother and more reliable connection.

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    ASUS ZenWiFi ET9 Firmware version 3.0.0.4.388_25160
    Version 3.0.0.4.388_25160
    50.31 MB
    2025/03/28
    SHA-256 :52CF5A1A964CE241838317CD96214FC3FB4720443C2E734813867ECA07122ABB

    1. Fixed the UI issue in Chrome.
    2. Fixed client binding issues in Mesh scenarios.
    3. Enhanced input parameter handling techniques to improve data processing stability and system security.
    4. Enhance system access control mechanisms.

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    ASUS ZenWiFi ET9 Firmware version 3.0.0.4.388_25146
    Version 3.0.0.4.388_25146
    50.36 MB
    2024/11/19

    Please unzip the firmware file, and then verify the checksum.
    SHA256: a320c60474fd3abde3edec255a4da8c73b5e9810a7c120c891f759b2b56b7d20

    1. Strengthened input validation and data processing workflows to further protect information security.
    2. Enhanced AiCloud password protection mechanisms, safeguarding against unauthorized access attempts.
    3. Enhanced device security through improved buffer handling in connection features.
    4. Refined data handling processes, ensuring secure and accurate information management.
    5. Enhanced file access control mechanisms, promoting a more secure operating environment.
    6. Strengthened certificate protection, providing enhanced data security.

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    ASUS ZenWIFI ET9 Firmware version 3.0.0.4.388_25136
    Version 3.0.0.4.388_25136
    50.29 MB
    2024/10/23

    1. Unauthorized access prevention and security enhancements.
    2. Prevent potential commad attacks in OpenVPN
    3. XSS attack prevention enhancements.
    4. AiMesh stability enhancement.
    5. Resolved WireGuard connection issue when changing server IP.
    6. Resolved IPv6 connection issue in VPN Fusion.
    7. System stability improvements.

    Please unzip the firmware file, and then verify the checksum.
    SHA256: 3f24bf1859086e3af88e1c3232ccfc02418673aa683f7daa348040613664ed1f

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    ASUS ZenWiFi ET9 Firmware version 3.0.0.4.388_24829
    Version 3.0.0.4.388_24829
    49.75 MB
    2024/09/25

    1. Optimized memory management mechanisms, improving system efficiency and stability.
    2. Strengthened input validation and data processing workflows, further protecting your information security.
    3. Improved web rendering engine, enhancing browsing experience and security.
    4. Enhanced security of system command processing to guard against potential malicious operations.
    5. Perfected JavaScript-related security mechanisms, offering a more secure web interaction environment.

    Please unzip the firmware file, and then verify the checksum.
    SHA256: 144204ac919ac33bb715327af9f0df836425a2732cbca02db3d779d41e0300c5

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