Dlink, the experts on breaking routers.
First the DGL-4500 that broke right after installing 1.20 firmware. Dlink tech support being useless, I finally got my money back after contacting BBB.
IF Dlink can't help, won't give refund or provide firmware that works file a BBB claim
https://odr.bbb.org/odrweb/public/getstarted.aspx?siteID=46
Now back to the DIR-825, after DGL-4500 I still bought a Dlink product, I got the revision B. Router was fine with firmware 2.02, then I made the mistake of updating to 2.03. Day after update router started loosing connection.
I have VOIP phone service, and almost every morning router has to be reset since the phone can't connect to the network, and again this never happened with 2.02 firmware.