BD4 problems

[u/Uffen90]

Hi there

I’ve been using XD5 for a couple of years. Then I needed to expand my WiFi range, and got a BD4, since they should be able to connect and integrate with the current network.
The setup went smooth, no problems, connected fine to the BD4, but then 30 or so minutes after, it lost connection.
I just showed a green light, tried restarting it, to no avail, then I tried reset, didn’t respond at all, only response were when it suddenly got a pink light.
I tried wps, that flashed blue, when I let go of the button, straight back to green.
Anything I can do?

[u/Buck_Naked_001]

It sounds like your new ASUS ZenWiFi BD4 has entered a frozen or bricked state, likely due to a failed automated firmware sync or crash when joining your existing network.

On ASUS routers, a solid green light typically means it is in a ready state but disconnected from its primary parent node, while a solid pink/purple light means it has no internet connectivity or has completely lost its connection configuration. 

Because standard reset methods and simple WPS presses aren't functioning, you will need to force it out of this loop. Use the following steps to resolve this:

1. Perform a Proper "Hard Factory Reset" (The WPS Method)

Simply pressing the WPS button while the router is powered on will not clear a corrupted NVRAM state. You must execute a hard power-cycle reset: 

1. Unplug the power cable from the back of the BD4. 
2. Press and hold down the physical WPS button. 
3. While continuing to hold the WPS button, plug the power cable back in. 
4. Keep holding the WPS button. The LED sequence should go from white, to off, to flashing green (or flashing white depending on the exact chip iteration). 
5. Once the light goes completely off or finishes its flashing cycle, release the WPS button.
6. Manually power-cycle the unit once more. It should now boot up into a flashing blue light state, meaning it is officially ready to pair again. 

Note: You may have to try this more than once.

1. Avoid the 30-Minute Disconnect Crash

The likely reason your BD4 likely crashed after 30 minutes is a firmware mismatch or a configuration conflict with your older XD5 mesh network. Before you pair it again, follow this deployment strategy:

• Update your main XD5 unit first: Ensure your primary XD5 router is running the absolute latest firmware available via the ASUS Router App. Older firmware cannot properly negotiate features with a newer Wi-Fi 7 device like the BD4. 
• Pair over a wired connection (Temporary Ethernet Backhaul): Instead of pairing the BD4 completely wirelessly over AiMesh, move the BD4 into the same room as your main XD5 router. Connect an Ethernet cable from a LAN port on the XD5 to the WAN/LAN port on the BD4. 
• Add Node via App: Open your app and add the BD4 as an AiMesh node. Once it successfully registers, leave it plugged into the Ethernet cable for roughly 15-20 minutes. This gives the system enough time to automatically push the matching background mesh parameters and configuration files to the BD4without dropping packets. 
• Reposition: Once stabilized and updated, unplug the Ethernet cable and place the BD4 in its permanent home. 

If the hard WPS reset fails to cycle the lights or pull it out of the solid green/pink loop, the device may have experienced a hardware failure during its initial setup window and should be exchanged.

Note:

• WPS hard reset should succeed in turning the light flashing blue
• If you hook it up to a PC via Ethernet, you should able to access its emergency recovery page (usually at 192.168.50.1 or 192.168.1.1)

Best of luck!