FYI

I have been trying this ID41 update in my 818v3 without much joy (using Windows 10 on Microsoft Surface laptop).

I thought I’d try selecting the MC200 rather than ID41. I didn’t make note of any versions, so I’m not even sure if there was an update BUT after updating this, my ID41 then updated without any issue.
Now on Version 1.2 Build 218.

I’d been trying all sorts, thinking it was a Windows firewall issue, digging into router settings etc.

Just thought I’d share in case anyone was still having issues.

Music Room: 818v3, DSP8000SE (SpeakerLink cables), iPad control
Shunyata Denali Power Distributor, fed by SIgma NR V2 + Sigma digital(818) + 2x Alpha NR(DSP8000SE)
Network Acoustics ENO filter + Rubicon Switch(powered by IFI IPower Elite)

Office: Stax SRS2020 via ifi Signature
Spare: DSP5200 + MC200

Running Roon Core on SonicTransporter