Devices / Routers & networking / ASUS RT-AX88U

ASUS RT-AX88U firmware

end of life

Latest firmware: 3.0.0.4.388_24385
Released: Apr 17, 2026
Category: Routers & networking
Last checked: Sep 14, 2026

How to update the ASUS RT-AX88U

Sign in at http://router.asus.com or open the ASUS Router app.
Go to Administration, then Firmware Upgrade.
Click Check to pull the latest, or upload a file from ASUS support.
Consider Asuswrt-Merlin if you want faster security fixes on a supported model.

Always download firmware from the manufacturer or project itself. Firmwarely links out; it never hosts firmware.

What changed

This model was end of its life, and its firmware, utility, website, and manual will no longer be updated. For more details, please refer to https://www.asus.com/event/network/eol-product/ Security Fixes: Enhanced input validation and protection to reduce the risk of command injection and SQL inject…

Manufacturer release notes ↗

Version history

3.0.0.4.388_24385

Apr 17, 2026

FAQ

How do I update the ASUS RT-AX88U?

See the step-by-step above. Log in to the router's admin page (usually at 192.168.1.1 or via the manufacturer's app), open the firmware or system update section, and apply the update. Most routers reboot for a minute or two.

How does Firmwarely know when there's a new version?

Every night we read the manufacturer's official release page for the ASUS RT-AX88U and record the version, date and changelog. If anything changed, subscribers watching this device get an email.

Is this an official ASUS page?

No. Firmwarely is independent. Device and brand names belong to their manufacturers; always download firmware from the official source.