TUF Gaming AX4200
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BIOS & FIRMWARE

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  • BIOS & FIRMWARE

Firmware
ASUS TUF-AX4200 Firmware version 3.0.0.4.388_34013
Version 3.0.0.4.388_34013
41.85 MB
2026/05/06
SHA-256 :41F5C06570FA4462316801D2890F760B7CB9C2F41C6E7C736DD5D15204F88871

Security Fixes
- Enhanced system security by addressing an unsafe remote script execution mechanism in.
- Improved system security by addressing a heap buffer overflow vulnerability during cache handling.
We recommend upgrading to this version to ensure up-to-date protection.

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ASUS TUF-AX4200 Firmware version 3.0.0.4.388_34011
Version 3.0.0.4.388_34011
41.85 MB
2026/03/11
SHA-256 :510F57151C8D7A2154D281C7177EB63275F5561D1C7DA6905CA609FF015BDAF4

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.

Security Enhancements:
Strengthened input sanitization mechanism
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 TUF-AX4200 Firmware version 3.0.0.4.388_33965
Version 3.0.0.4.388_33965
41.88 MB
2025/10/23
SHA-256 :B4AFCAB4835802411252C05711993D3A1355BB99DE6B8274FEDCE406DDB96A97

- 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 TUF-AX4200 Firmware version 3.0.0.4.388_33950
Version 3.0.0.4.388_33950
41.88 MB
2025/08/22
SHA-256 :06735D2415DA945915AB9F0B658FBDEEA52C507EB7566EB051E40C7BDBD095DA

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

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ASUS TUF-AX4200 Firmware version 3.0.0.4.388_33920
Version 3.0.0.4.388_33920
41.88 MB
2025/06/16
SHA-256 :E19F946A3DBBEB0005AB567640F599A37AF01EB26A1551D07E374D38C1D2805E

1. Fixed the IPTV compatibility issue for Now TV.
2. Improved network stability and data transmission performance.

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ASUS TUF-AX4200 Firmware version 3.0.0.4.388_33903
Version 3.0.0.4.388_33903
40.36 MB
2025/03/13
SHA-256 :DEEB17E3712AB85BD4F274EFCB81C216B63257F34BDE915BA73CDE80AFCAE43F

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

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ASUS TUF-AX4200 Firmware version 3.0.0.4.388_33506
Version 3.0.0.4.388_33506
39.46 MB
2024/11/14

Please unzip the firmware file, and then verify the checksum.
SHA256: 97d98531d69a35cfc972863db074776aa5a18cd548a49d952560e10a027665fc

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 TUF-AX4200 Firmware version 3.0.0.4.388_33489
Version 3.0.0.4.388_33489
39.4 MB
2024/10/09

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
SHA: b3533ad8c58604c5463fec4bc7c5fa956e224ed1177a2e657d59def0b6b3d91d

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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.
    • ASUS makes no representations or warranties about this product’s compatibility with future standards.
    • 6GHz band is limited to indoor range. Clients must support 6GHz band.
    • MU-MIMO capability requires both router and client device to support MU-MIMO.
    • 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.