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ASUS ZenWiFi AX (XT8) Firmware version 3.0.0.4.388_24911
Version 3.0.0.4.388_2491150.02 MB2026/10/22This update includes a required change for the Speedtest service. If Speedtest is supported on your model, you must install this update to continue using it.
Please refer to Speedtest Service Announcement for details.
https://www.asus.com/support/faq/1057454/Supports Surfshark VPN account login for a smoother user experience. (Supported model only)
Fixed an issue that could cause DNS resolution failures and loss of Internet access when DNSSEC is enabled.
Security Fixes
Web management interface: Strengthened data handling for the connected device list and added stricter content checks when importing configuration profiles.
Network speed test service: Added allowlist validation for service command parameters, so that only expected values are accepted.
System protection service: Adjusted address parameter validation and event logging, strengthening access control between local services.
Certificate import process: Adjusted file handling and password passing, with stricter parameter validation.
Third-party account authorization: Narrowed the recipients of authorization data to better protect authorization information.
Web management interface: Adjusted the output handling of feedback content.
Notification service: Added identity verification for local connection sources and tightened the related file permission settings.
Mobile device connection authorization: Added a device matching check to strengthen the access token issuance process.
Device discovery service: Removed a non-essential internal function endpoint to strengthen overall access control.
AiMesh: Adjusted data access protection during the node joining process, improving system stability while connections are being established.
System temporary directory: Adjusted the default permissions applied at creation time to narrow local file access.
Network diagnostic data query: Strengthened value range checks for time interval parameters.
Network diagnostic data query: Added allowlist validation for query fields.
Internal data query: Improved field matching logic and optimized the memory release process under error conditions.
Time synchronization settings: Strengthened parameter validation for the server name.
File upload handling: Fixed an issue where certain input formats could cause the web management service to become unresponsive.
Wireless channel selection tool: Adjusted the handling of command parameters to prevent unintended command execution.
Certificate upload: Added a pre-check of archive contents to prevent files from being written to unintended locations.
System configuration file generation: Strengthened parameter content checks to prevent abnormal configuration values from affecting network service settings.
VPN and account authentication services: Adjusted the handling of connection settings and account data, with stricter parameter validation.-
This reply was modified 4 days, 13 hours ago by
dodgydrains.
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This reply was modified 4 days, 13 hours ago by
dodgydrains.
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This reply was modified 4 days, 13 hours ago by
dodgydrains.
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Version 3.0.0.6.102_39442
62.03 MB
2026/10/21Fixed an issue that could cause DNS resolution failures and loss of Internet access when DNSSEC is enabled.
SHA-256 :5B118D862B04CBE9C80B40062E5646DDA219FC79B44D325D3593A4F469F146E4
https://dlcdnets.asus.com/pub/ASUS/wireless/ZenWiFi%20BQ16/FW_ZenWiFi_BQ16_300610239442.zip?model=ZenWiFi%20BQ16
(For direct download, copy the above link and paste it into your browser.)ASUS ZenWiFi BQ16|Whole Home Mesh WiFi System | ASUS UK
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. MultiDoc Said:I am not familiar with the Reaper, any info ? I have only been using ASUS’s firmwares and I haven’t had any issues so far and the mesh system has been rock stable since day one for me (2 x BQ16’s and a BD4 Outdoor). I’ll manualy update the firmware tonight and post if any issues.
Thanks
I would stay away from Reaper for now as it is not stable yet. It is being worked on by a developer on snbforum.com
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This reply was modified 1 week, 2 days ago by
dodgydrains.
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. MultiDoc Said:Thanks for this, but checking either through the phone app and/or the browser, it says there’s no update available and that I have the latest firmware already (first time this happens). In any case I’ll do a manual update.
Appreciate it, thanks!
Let us know how you get on. I am testing Reaper beta firmware, helping as much as I can to get it stable.
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ASUS ZenWiFi BQ16 Firmware version 3.0.0.6.102_39441
Version 3.0.0.6.102_39441
62.03 MB
2026/10/15This update includes a required change for the Speedtest service. If Speedtest is supported on your model, you must install this update to continue using it. Please refer to Speedtest Service Announcement for details.
Supports Surfshark VPN account login for a smoother user experience. (Supported model only)
Security Fixes
Web management interface: Strengthened data handling for the connected device list and added stricter content checks when importing configuration profiles.
Network speed test service: Added allowlist validation for service command parameters, so that only expected values are accepted.
AiCloud: Strengthened the data handling mechanism for the network neighborhood host list.
AiCloud: Improved how share link identifiers are generated, and adjusted the file and disk information query process.
AiCloud: Strengthened authentication and path validation for remote file access.
System protection service: Adjusted address parameter validation and event logging, strengthening access control between local services.
Certificate import process: Adjusted file handling and password passing, with stricter parameter validation.
Third-party account authorization: Narrowed the recipients of authorization data to better protect authorization information.
Web management interface: Adjusted the output handling of feedback content.
Notification service: Added identity verification for local connection sources and tightened the related file permission settings.
Mobile device connection authorization: Added a device matching check to strengthen the access token issuance process.
Device discovery service: Removed a non-essential internal function endpoint to strengthen overall access control.
AiMesh: Adjusted data access protection during the node joining process, improving system stability while connections are being established.
System temporary directory: Adjusted the default permissions applied at creation time to narrow local file access.
Network diagnostic data query: Strengthened value range checks for time interval parameters.
Network diagnostic data query: Added allowlist validation for query fields.
Internal data query: Improved field matching logic and optimized the memory release process under error conditions.
Time synchronization settings: Strengthened parameter validation for the server name.
File upload handling: Fixed an issue where certain input formats could cause the web management service to become unresponsive.
Wireless channel selection tool: Adjusted the handling of command parameters to prevent unintended command execution.
Certificate upload: Added a pre-check of archive contents to prevent files from being written to unintended locations.
System configuration file generation: Strengthened parameter content checks to prevent abnormal configuration values from affecting network service settings.
VPN and account authentication services: Adjusted the handling of connection settings and account data, with stricter parameter validation.We recommend updating to this version to maintain optimal protection.
ZIP SHA-256 : D7690CBBDE1EFD79450A8DC0CC0A0418CDFF7ADB90EDF8AB64AFF3700D158832
FW SHA-256 : ACA7A90733F7891758B5FE13F4E15FA9A9C577D77706CCBDE368CE1243867DE4Download:
(Copy the link and paste it into your browser.)
Looks like a significant FW update
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This reply was modified 1 week, 5 days ago by
dodgydrains.
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I have been testing since the first BQ16 release. The one bug I found where the devices/clients were not showing in the AiMesh tab looks like has now been fixed. The member who is working on it seems very responsive and works on fixes really quickly. Hope he does not take on too much. BQ16 UI looks so much better now.
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This reply was modified 2 weeks, 3 days ago by
dodgydrains.
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I have jumped on board and updated my BQ16’s until Asus release the next FW.
Provided him with feedback on a bug I found.
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The built in speedtest in the web GUI looks borked now. Hopefully the fix is included in the other models and will come to the BQ16 soon.
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Looks like the BQ16 is not recieving the Asus firmware update love this time round, maybe they are working on it for a bit longer to make it even better.
I went over 100 days of uptime with no issues at all.
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. UK Sentinel Said:The KB5089573 update is designed for x64 (AMD64) and ARM64 systems so looks like good news for yourself.
Given your using the AMD Ryzen 7 9800X3D which is high end CPU, the improvements maybe less noticeable.
What MB you running with that setup ?
In a completely sane world, madness is the only freedom (J.G.Ballard).
I am running this motherboard.
https://uk.msi.com/Motherboard/MAG-X870E-TOMAHAWK-MAX-WIFI-PZ/support
Built the PC myself as a project with my son couple of months ago. I had 32GB ddr5 RAM and a few gen5 ssd’s that I purchased before the AI apocalypse hit us.
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This reply was modified 5 months ago by
dodgydrains.
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. UK Sentinel Said:Yes, it does sound interesting in that the boost works in very short bursts (roughly 1–3 seconds) to improve responsiveness rather than sustained performance.
Are you going to try it with KB5089573 which is already available now as an optional “Preview” update for Windows 11 24H2 and 25H2 – otherwise I think KB5089573 will be deployed sometime in June

In a completely sane world, madness is the only freedom (J.G.Ballard).
I updated to the this ‘2026-05 Preview Update (KB5089573) (26200.8524)’ on 27/05/2026. I have a AMD Ryzen 7 9800X3D, no idea if it is actually doing anything for me. I heard File Explorer is supposed to be more snappy. It does seems a bit less cumbersome when loading, but not sure if it is just a placebo.
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Yes, looks like a huge drive by Asus on updating security on their routers.
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This reply was modified 5 months, 3 weeks ago by
dodgydrains.
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ASUS ZenWiFi BQ16 Firmware version 3.0.0.6.102_39256
Version 3.0.0.6.102_39256
61.77 MB
2026/05/04Security Fixes
– Enhanced system security by addressing an unsafe remote script execution mechanism in.
– Improved system security by addressing a heap buffer overflow vulnerability during cache handling.
We recommend upgrading to this version to ensure up-to-date protection.Download:
(Copy the link and paste it into your browser.)
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This reply was modified 5 months, 3 weeks ago by
dodgydrains.
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This reply was modified 5 months, 3 weeks ago by
dodgydrains.
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I had similar issues after changing my DNS from cloudflare to Quad9. Could not access spedtest.net or load other sites properly on the WiFi on any of my devices including the mobile. The problem only happened on some sites and not all.
Then turned off WiFi on the mobile and used mobile data and everything worked fine on the mobile.
Turned out to be a DNS issue and the only way to fix it was to reset the ISP router and set it up from scratch with Quad9 DNS. Rebooting or resetting just the BQ16’s did not fix it.
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Yeap, dirty flashed after using the the previous FW for 130+ days uptime with no issues.
Hopefully this one is as stable for me as the last one.
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This reply was modified 7 months, 2 weeks ago by
dodgydrains.
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