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Problem with RT-AX58U after upgrade

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After upgrade to on my RT-AX58U I got serious problem with the web UI when I activate WireGuard. I've tried both Factory Reset and Firmware Restoration, but the same problem appears when I enable WireGuard. I've even tried installing Merlin, but then WireGuard doesn't work. Anyone else encountered this problem and found a solution?

I updated AX58U V2 to a couple of weeks back and am having issues with the 2.4Ghz SSID.
I connect all my smart device to this SSID, and recently it's been dropping the connections eg. smartcam shows as offline as it doesn't have internet access.

I looked at the available SSIDs and I can see it, but when I connect to the 2.4Ghz SSID, the signal shows like this:

That is directly next to the router.
There is no issue on the 5Ghz SSID, only the 2.4Ghz one.

I then checked the connected devices on that SSID through the admin web portal, and I can still see them as connected (smartcam, lights, water heater etc.)
But the devices doesn't seem to be able to get internet access.

I need to restart the router and it will be back to normal, but then after a few hours it will happen again.


Indicator shows nothing abnormal.

Here is the wireless log for the 2.4Ghz SSID:

Anyone having issues like this and have a solution?

If I download an older firmware and do the 'update' via the admin web portal will it accept if it's an older firmware?
Is this a hardware issue?


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