› UKTH forums › 🛜 Wireless Routers & Modems › ASUS & Wireless › ASUS ZenWiFi XT9 – Official Thread Latest firmware for the ASUS ZenWiFi XT9 – Version 3.0.0.4.388.21069 2022/09/28 ASUS ZenWiFi XT9 Firmware version 3.0.0.4.388.21069 1. Fixed Samba file system clutter bug. 2. Improved AiMesh system backhaul TXBF...
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UK Sentinel.
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November 7, 2024 at 5:22 am #34765
ASUS ZenWiFi XT9 Firmware version 3.0.0.4.388_24684
Version 3.0.0.4.388_24684
2024/11/05
Changelog:
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.In a completely sane world, madness is the only freedom (J.G.Ballard).
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March 14, 2025 at 2:11 pm #35990New ASUS ZenWiFi XT9 Firmware version 3.0.0.4.388_24709
version 3.0.0.4.388_24709
2025/03/13
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.In a completely sane world, madness is the only freedom (J.G.Ballard).
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April 23, 2025 at 7:39 pm #37292ASUS ZenWiFi XT9 Firmware version 3.0.0.4.388_24710
version 3.0.0.4.388_24710
2025/04/22
- Improved compatibility with certain IoT devices.
In a completely sane world, madness is the only freedom (J.G.Ballard).
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October 20, 2025 at 5:52 pm #39866ASUS ZenWiFi XT9 Firmware version 3.0.0.4.388_24768
version 3.0.0.4.388_24768
2025/10/20
– 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.
– Fixed a privilege escalation vector in the IFTTT token exchange mechanism
– 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.In a completely sane world, madness is the only freedom (J.G.Ballard).
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May 16, 2026 at 10:12 am #42706New firmware for XT9 15/5/26
ASUS ZenWiFi XT9 Firmware version 3.0.0.4.388_24814
Looks like the zip file for the latest firmware is corrupted, it won’t unpack correctly.
Tom
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May 16, 2026 at 11:33 am #42707I just checked and also had issues when attempting to extract/unpack this firmware package.
FW_ZENWIFI_XT9_300438824814.zip
I’ll drop ASUS a message and see if they can replace asap

In a completely sane world, madness is the only freedom (J.G.Ballard).
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May 16, 2026 at 12:12 pm #42708Appreciated 👍
New firmware has been released for a few models over the past few days but only reports exist for the XT9 suggesting it’s not widespread.
Tom
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May 16, 2026 at 12:17 pm #42709Good to know

In a completely sane world, madness is the only freedom (J.G.Ballard).
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May 18, 2026 at 11:06 am #42714re-released ASUS ZenWiFi XT9 Firmware version 3.0.0.4.388_24814 and corruption has been fixed

2026/05/18
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.In a completely sane world, madness is the only freedom (J.G.Ballard).
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May 18, 2026 at 12:02 pm #42715May 18, 2026 at 12:23 pm #42716
In a completely sane world, madness is the only freedom (J.G.Ballard).
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