soheilsh wrote

hi , i bought mr400 v4.20 today  i have three problems . 
1- where is frimware for mr400 4.20 in tplink site ?
i try to flash with mr400 v4 but not accept file 

The firmware of V4 is not compatible with V4.2 and for V4.2, I think it is a new version and there is no new firmware yet except for the factory version.

It is suggested to wait for a while for the update.

2-my phone or laptop wifi link connection is 866mbps but maximum speed around 350mbps file transfer between my laptop and phone is 20MB 
i have another router ( xiaomi router 4a ac1200 ) but xiaomi speed is 650 700 mbps ! and file transfer between my laptop and phone is 50MB please resolve speed problem

For this issue, with wireless link speed 866m/s on both phone and laptop, the Maximum transfer speed of a 350M file is 20MB/s(160mb/s).

While on the Xiaomi 4g router, though the link speed is 650-700m/s, the transfer speed of the same file is about 50MB/s(400mb/s).

Did I get it correctly or actually the MB is 20/50 Mb/s?

 

3-in wifi 2.4 and 5ghz my phone and laptop scan hidden network (mesh ) with same mr400 mac address !! what is this ? my guest wifi is off !

I see you have replied the hidden SSID thread about MR600 and you have located the issue by yourself.

The hidden SSID is used for OneMesh. I will note down this feature first and It is planned to add a on/off switch along with the firmware upgrade.

 

@soheilsh Thank you very much for your time and patience and please see the reply in bold.