Csrss.exe malware

[Tex2000]

The firmware in my Orbi was updated this morning and now I can't connect to the Internet. I talked to Tech Support who told me I have the csrss.exe malware on my network and Orbi will block Internet access until this is resolved. Any experience with this and identifying where this malware resides and how to remove it?  All the computers are running antivirus. Any idea if non-PC's (phones, tablets) can host this malware?  All of our devices except one are IOS. 

[antinode]

> Model: RBR50|Orbi AC3000 Tri-band WiFi Router

RBR50[v1] or RBR50v2?  Look for "Model" on the product label.
Firmware version?  Connected to what?

> [...] I talked to Tech Support [...]

   Whose?  How, exactly?  Did you do _anything_ other than start at
http://support.netgear.com/ ?

> [...] who told me I have the csrss.exe malware on my network and Orbi
> will block Internet access until this is resolved. [...]

   Sounds very unlikely to me.

> [...] Any idea if non-PC's (phones, tablets) can host this malware?
> [...]

   A quick Web search (for "csrss.exe") suggests that the real thing is
a Windows component.

      https://www.howtogeek.com/321581/what-is-client-server-runtime-process-csrss.exe-and-why-is-it-runni...

Look for "Tech support scammers"?

   A better start might be to visit http://netgear.com/support , put in
your (actual) model number, and look for Documentation.  Get the User
Manual.  Read.  Look for the LED descriptions and "Troubleshoot".