I think I downloaded a trojan horse to my main router, and now my internet doesn’t work. I tried emailing netinstall.exe to Mikrotik, but they never responded. My users aren’t able to connect at all to the Internet. I have about 15 of these on towers, but the trojan has spread to all of them now 
Please tell me how to update the norton on these so they will work again. I’m using v5.21.