Release ASUS TUF-AX6000 Firmware version 3.0.0.4.388_33965 (2025/10/23)

[UltrashRicco]

Another 14 days of uptime and I cannot seem to be able to reproduce the page loading issues.

I would recommend performing a hard factory reset as described here: https://www.asus.com/support/faq/1039078/ then inputting all settings manually again, which I did, as recommended by Asus, when upgrading from 3.0.0.4.388_33911 to 3.0.0.4.388_33950

3.0.0.4.388_33965 seems stable to me, contrary to previous revisions that would show page loading issues after only hours of uptime.
I am still setting up my weekly reboot schedule again now that I am done with testing this latest revision.

Regards!

 

[JohnKKKKK]

Based on my testing, the page loading issues seem to be caused by IPv6. After disabling IPv6, everything works normally.

 

[UltrashRicco]

I disabled IPV6 entirely not that long ago because one of my VPN connections cannot handle it anyway. It could very well be when I did the hard factory reset and had to enter all settings manually again.

This could explain how I never experienced the issue while connected to a VPN (when I did have IPV6 enabled), and immediately experienced it again when disabling the VPN connection.

How did you test and get to that conclusion, @JohnKKKKK ?
Thanks!

 

[JohnKKKKK]

Whenever I enable IPv6, I experience slow loading or failed loading when using streaming apps. This does not happen when IPv6 is turned off.

P.S.:
My model is the TX-AX6000, which is the TUF-AX6000 sold in China. It uses the same hardware and firmware, only with a different UI. People in the Chinese community have also pointed out that the issue is caused by IPv6.

 

[UltrashRicco]

I enabled IPV6 again to check. I rebooted the router, so it may take a while before I experience issues.

@JohnKKKKK, do you know when the Chinese community found out the issue to be related to IPV6? Did they notify Asus?
By any chance, could you link to a Chinese forum or source, please?

Thanks!

 

[UltrashRicco]

Well, barely 1,5 hours after enabling IPV6 again, I can totally confirm the page/image loading issues are back!
The issue is not present when I enable my VPN tunnel that does NOT support IPV6.
It makes sense now, the issue really is with how the router handles IPV6 over WLAN.

You nailed it @JohnKKKKK, thank you!

 

[JohnKKKKK]

Well, barely 1,5 hours after enabling IPV6 again, I can totally confirm the page/image loading issues are back!
The issue is not present when I enable my VPN tunnel that does NOT support IPV6.
It makes sense now, the issue really is with how the router handles IPV6 over WLAN.

You nailed it @JohnKKKKK, thank you!

It’s good news to hear that you also confirm this is an IPv6-related issue. I’ve already emailed ASUS to report it, but it wasn’t effective enough. This problem has existed for almost a year, yet ASUS doesn’t seem to have identified it or shown any intention to fix it. I hope more people can report this to ASUS as well, to let them know there are issues with the IPv6 functionality on this router. I suspect that all MediaTek-based ASUS routers may have similar problems since the update in March 2025. This is really frustrating.

 

[Unhappy ASUS user]

@JohnKKKKK
Hi, I have a different model Tuf-AX4200 but it has the same chipset, I communicate with ASUS support, I test different firmwares, different settings, but the problems are there all the time. In my case, I always have IPv6 turned off, QoS turned off and I have no VPN. Support doesn't seem to be preparing a new firmware. According to support, there are no problems and support cannot reproduce the problems, the problems are not even reported, so there are no problems.

 

[JohnKKKKK]

@JohnKKKKK
Hi, I have a different model Tuf-AX4200 but it has the same chipset, I communicate with ASUS support, I test different firmwares, different settings, but the problems are there all the time. In my case, I always have IPv6 turned off, QoS turned off and I have no VPN. Support doesn't seem to be preparing a new firmware. According to support, there are no problems and support cannot reproduce the problems, the problems are not even reported, so there are no problems.

If you’re sure that IPv6 is disabled or you’ve downgraded to a version earlier than March 2025 and the slow page loading issue still exists, then it’s probably caused by something else, such as a compatibility issue. I’m not completely sure either. In my case, the router does work normally after disabling IPv6.

 

[Unhappy ASUS user]

I don't know what compatibility you are talking about, the problem is across platforms, mediatek, intel, qualcomm, etc..

 

[denis]

@JohnKKKKK
Hi, I have a different model Tuf-AX4200 but it has the same chipset, I communicate with ASUS support, I test different firmwares, different settings, but the problems are there all the time. In my case, I always have IPv6 turned off, QoS turned off and I have no VPN. Support doesn't seem to be preparing a new firmware. According to support, there are no problems and support cannot reproduce the problems, the problems are not even reported, so there are no problems.

The problem is related to Asus firmware only. Have tested with OpenWRT latest firmware and the router is running as it should no issue whatsoever.
Therfore by contacting Asus and received a generic reply how to reset and start over I have decided to return the product due to not fit for purpose.
Sorry but have wasted enough time of my life for a bloody router that is misbehaving.

 

[denis]

Fun fact: the Asus FW is actually based on OpenWRT

I did try it myself and the basic setup is easy enough as you say @denis
However I hit a roadblock trying to configure even a single VPN connection, and I got frustrated with the documentation, when things should be much more straightforward.

I guess it is more intended to be used through the CLI rather than through the limited GUI, and the GUI is where Asus' FW does shine. Do not get me wrong, I believe OpenWRT is fantastic to learn about how networking works, by configuring every basic tool required to do stuff, but it requires involvement and time that I cannot spare at the moment, I need something that just works without hassle, and the Asus FW is rather good at that.

My router has been running for 10 days since the last reboot, and I believe I rebooted it right after disabling Adaptive QoS, that I enabled by mistake from the Asus APP on my phone by hitting "optimize" on a client, without knowing it would enable QoS...
No page loading issues to report so far with VPN disabled.

Those of you experiencing thepage loading issues, did you perform a hard factory reset as recommended when upgrading to the previous version of the FW?
Could you try and configure a VPN connection (Proton VPN offers free servers) and check whether you still experience the issue with a VPN connection enabl

No it`s not.

It was forked from Tomato in 2009-2010, which in turn was forked from HyperWRT, which was based on Linksys' GPL code.

Then how can you explain this from booting log?

May 5 06:05:11 kernel: Linux version 5.4.246 (root@asus) (gcc version 8.4.0 (OpenWrt GCC 8.4.0 r0-db7dd77)) #1 SMP Thu Oct 16 19:03:33 CST 2025
May 5 06:05:11 kernel: Kernel command line: root_rfs=0x33e6f8 rootfstype=squashfs ubi.mtd=UBI_DEV console=ttyS0,115200n1 loglevel=8

A quick search on Internet:

OpenWrt GCC 8.4.0 refers to the specific GNU Compiler Collection version used in certain OpenWrt releases, notably found in the 21.02.0 series, indicating a stable toolchain for embedded systems development, often paired with Linux kernel 5.4.x and targeting low-power devices, providing essential C/C++ compilation for custom firmware builds. It signifies a mature, widely-used compiler within OpenWrt's build environment for devices needing efficient, feature-rich firmware.

So to me is an assembled custom firmware based on 21.02 open wrt.

 

[RMerlin]

May 5 06:05:11 kernel: Linux version 5.4.246 (root@asus) (gcc version 8.4.0 (OpenWrt GCC 8.4.0 r0-db7dd77)) #1 SMP Thu Oct 16 19:03:33 CST 2025

That's just the compiler toolchain used to compile the firmware. This has nothing to do with the firmware code itself.

 

[denis]

That's just the compiler toolchain used to compile the firmware. This has nothing to do with the firmware code itself.

It is openwrt the compiler only. Got it.Thank you for the information.

 

[UltrashRicco]

I don't know what compatibility you are talking about, the problem is across platforms, mediatek, intel, qualcomm, etc..

Hi @Unhappy ASUS user, I believe @JohnKKKKK is reffering to all Mediatek-based Asus routers, they share a common or similar chipset, provided by Mediatek. You on the other hand seem to be talking about all your CLIENTS being affected, regardless of their processor/architecture.

 

[Krejva]

Unfortunately, even with IPv6 disabled, the problems keep recurring. When I connect my laptop via Wireguard VPN, everything is fast and stable. After disconnecting, it becomes a dial-up connection.

 

[UltrashRicco]

Unfortunately, even with IPv6 disabled, the problems keep recurring. When I connect my laptop via Wireguard VPN, everything is fast and stable. After disconnecting, it becomes a dial-up connection.

Same, I only have issues when not using a VPN tunnel.

Have you tried a hard factory reboot, then configuring everything again manually? (not uploadig a saved settings file).

Also, can you confirm the issues only appear over WLAN (WiFi) and not over LAN?

 

[Krejva]

Yes, only devices connected via WLAN have problems. I did a hard reset before and after the update. I sent the data as feedback to Asus. Their answer leads me to believe that this is the first time they are hearing about the problems here (Czech Republic).

 

[UltrashRicco]

Yes, only devices connected via WLAN have problems. I did a hard reset before and after the update. I sent the data as feedback to Asus. Their answer leads me to believe that this is the first time they are hearing about the problems here (Czech Republic).

I would recommend a HARD factory reset (apparently resets more settings), as described here: https://www.asus.com/support/faq/1039078/

I have no issues with IPV6 disabled. Actually I was not able to replicate the issue because I had disabled IPV6 support when manually configuring all settings after the FW upgrade and subsequent hard factory reset...

I really doubt that Asus in unaware of any IPV6-related issue with their routers. A quick Google search digs up many IPV6-related issues due to a not so good IPV6 implementation since at least 2018. I have no idea whether this is a legacy issue that could be affecting us today though.

 

[Unhappy ASUS user]

@UltrashRicco
Can I ask what IPv6 settings you mean? When performing the factory reset, IPv6 is always disabled, only the IPv6 firewall is enabled.
Could you please describe what you are disabling with IPv6?