I noticed there was an update for my old mans router firmware in the tether app this morning, although it wasn't showing as available on the support website.
I have the MR600 meshed with two RE505X extenders. Before the update everything was working fine with firmware 190412
After updating the firmware to 200511, the extenders would no longer connect to the router on 5GHz and one of the extenders just kept dropping its connection to the router meaning clients were continually changing their connections. When it did say it had a connection, any conencted devices had no internet.
After messing around with it for ages trying to re-establish the connections, i gave up and downgraded back to the original firmware. As soon as i did that and everything had settled, the extenders were once again connected as before, all lights lit and no problems.
Anyone else experiencing problems with the new firmware?