@Vesparion Cause the new firmware has added some new features, we cannot downgrade it to the old firmware via the web UI directly. And if possible, we can do some troubleshooting to locate this issue...

@netizensmith Hello, did you change the password of the cloud account? After you changed the password of it, please try to access the cloud website with your email address and new password and verify...

@netizensmith Can you detect the wifi signal from the other 2 Deco and get internet from it when you are next to the 3rd Deco? With the LED shows solid green, please connect your computer to it and...

@Superior3000 There is not much difference between Deco M9 plus V1 and V2; They use their own firmware, unlike Deco M5 V1 and V2 share the same firmware. You can refer to the datasheet to get more...

@raulbsc Cause there is no official driver for your linux OS pc, you can search the driver online with the chipset, which is Realtek RTL8192EU May it help and have a good day.

@Cobra91151 Thanks for your reply. Can it detect the Xiaomi MI 9 hotspot network? And do you have the same issue with Archer T4U connected to the Archer C6? Have you ever tried to change some...