Release ASUS RT-AX59U Firmware version 3.0.0.4.388_33965 (2025/10/23)

[fruitcornbread]

Version 3.0.0.4.388_33965
40.38 MB
2025/10/23

- 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.

ZIP SHA-256 : FFE1483B3E82AD7581C3C95E12D38009FA8DC63B57D416079AB79FA91F6531BF
FW SHA-256 : 8467c05b16d291f4c639c220942e6c2bd9c649617f08f065a2482a290f84be38

Download: https://dlcdnets.asus.com/pub/ASUS/wireless/RT-AX59U/FW_RT_AX59U_300438833965.zip?model=RT-AX59U

RT-AX59U｜WiFi Routers｜ASUS Global

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[izzzgoy]

Hello everyone! For those who have already updated to this firmware, can you tell me if the Wi-Fi issue persists or has it been fixed?

 

[RomainD2]

Hello everyone! For those who have already updated to this firmware, can you tell me if the Wi-Fi issue persists or has it been fixed?

Hi,

What Wi-Fi issue are you talking about ?

I bought 3 Asus RT AX59U few months ago to make a good wifi mesh, but I have a lot of Wifi issues. The connection seems good with the wifi strength, but I can load a simple webpage. Cameras loose often signals...

I need to disconnect and reconnect Wifi on my devices to have a good internet speed, but few minutes after that, it begin again...

I send a message to Asus support, but I don't have any answer yet...

So disappointed !

 

[izzzgoy]

Hi,

What Wi-Fi issue are you talking about ?

I bought 3 Asus RT AX59U few months ago to make a good wifi mesh, but I have a lot of Wifi issues. The connection seems good with the wifi strength, but I can load a simple webpage. Cameras loose often signals...

I need to disconnect and reconnect Wifi on my devices to have a good internet speed, but few minutes after that, it begin again...

I send a message to Asus support, but I don't have any answer yet...

So disappointed !

The last successful firmware update was version 3.0.0.4.388_33407. Four firmware updates have been released since then, and all of them have issues with Wi-Fi internet access. I also contacted Asus support, and here's their response: "Thank you for the information, it's been forwarded to the RD department for review and testing."

 

[bingoshrimp]

I seen the same problems with my AX59U on the latest 965 firmware, e.g. intermittent problems with web pages that didn't seem to load, and problems casting via Chromecast.

I've had a bumpy ride with this router all along, but the broken experience since march, which lasted (and is lasting) through 4 firmware updates, and thus having to revert to year-old firmware really pushed me over the edge. I've since bought some UniFi equipment, and... man... that's just a whole different level. I can't believe I've put up with Asus for so long. No more chances.