ASUS RT-AX86U
Routers · ASUS
Latest Firmware
Version 3.0.0.4.388_24437
Released
71.6 MB
Update track record
- releases tracked since 2020
- 25
- typical gap between releases
- ~2 months
- since the latest release
- 5 days
- security-related releases · latest 2026-04-17
- 19
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Firmware History
3.0.0.4.388_24437
LatestFixed an issue that could cause DNS resolution failures and loss of Internet access when DNSSEC is enabled.
Download from ASUS (opens in new tab)3.0.0.4.388_24436
SecurityDownload from ASUSSecurity 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.
Why Keep Your Firmware Updated
Router firmware is critical for network security. Updates patch vulnerabilities that could allow remote access to your network, fix Wi-Fi stability issues, improve throughput performance, and add new features. Given that routers are internet-facing devices, keeping firmware current is one of the most important security measures you can take.