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BIOS & FIRMWARE

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Firmware
ASUS RT-AX52 Firmware version 3.0.0.4.388_34015
Version 3.0.0.4.388_34015
25.2 MB
2026/03/20
SHA-256 :857E6F4C4ADD6DBE578524FFB5A6AF647928F2238AC124D4DEE1949FF94ACED8

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 RT-AX52 Firmware version 3.0.0.4.388_33965
Version 3.0.0.4.388_33965
25.22 MB
2025/10/20
SHA-256 :3D816C592873AAA264243B69412411760AA03EDB92CAD8D21C4528C03947E828

- Enhanced system stability.
- Enhanced input validation and refactored legacy string handling routines to ensure robust memory management.
- 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 RT-AX52 Firmware version 3.0.0.4.388_33950
Version 3.0.0.4.388_33950
25.23 MB
2025/08/25
SHA-256 :A5EF190C4ED7C47A68C2BC1ED68FD77912A8D17EA4B988295B77310BB2000DD2

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.
- 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 RT-AX52 Firmware version 3.0.0.4.388_33911
Version 3.0.0.4.388_33911
25.23 MB
2025/04/25
SHA-256 :769FC8A3CE28F14CAE08DE1DA6BAE711BE3926BE9C5E464881824029934DE550

Fixed the IPTV compatibility issue for Now TV.

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ASUS RT-AX52 Firmware version 3.0.0.4.388_33903
Version 3.0.0.4.388_33903
25.24 MB
2025/03/04
SHA-256 :93D7C2A46E26EB96448F839A468634E9FC98955781C0438D561390191772BE70

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 RT-AX52 Firmware version 3.0.0.4.388_32683
Version 3.0.0.4.388_32683
23.91 MB
2024/05/27

- Improve Wirelss compatibility

Please unzip the firmware file, and then verify the checksum.
SHA256: 1c9cf862a97eabac6a8b56447acdf639bd19f4e8d394a3d5069540e221d7fc6d

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ASUS RT-AX52 Firmware version 3.0.0.4.388_32682
Version 3.0.0.4.388_32682
23.9 MB
2023/10/30

Initial firmware release

Please unzip the firmware file, and then verify the checksum.
SHA256: 609f349e5ee0352ffa1be11b35842704b2d5341705ed9dd7028876caf6691ea0

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