@anna_5683 Hi, OneMesh extender will still work with normal wireless router without OneMesh, the only difference is not able to build a OneMesh network. In addition, here is the OneMesh compatibility...

@yisusxz Hi, it is actually okay to use the same SSID as the router, if you would like to use different SSIDs on the extender, please connect to the extender first via its current SSID, then please...

@David1956 Yes, after configuring the extender, signal strength LED will light up, which indicates the signal strength extender receives from your router.

@Abdulaziz_1980 Hi, what is the current firmware on your TL-WA855RE V1? Which firmware you are trying to update and is there any error message?

@DemirDemirtas Hi, may I know the LED status of your extender? if 2.4GHz and 5GHz LEDs are both off, it means the extender is not connected to your router WiFi yet, please refer to the instructions...

@Heerjee Hi, glad to hear that you've solved the problem, thanks for sharing the solution. By the way, do you mean your mobile still doesn't connect to the extended network?