Installing Firmware Updater

Installation scope: Per-user (%LOCALAPPDATA%\Programs\Sennheiser.FirmwareUpdater\). No elevation to Administrator is required.

Execution level: asInvoker — the application always runs with standard user privileges.

Shortcuts: Desktop and Start Menu shortcuts are created automatically.

Installer GUID: d8117db3-ae99-5b3e-8f83-67c056c83b7c

Code signing: Azure Code Signing — CN=Sennheiser electronic SE & Co. KG, O=Sennheiser electronic SE & Co. KG, L=Wedemark, S=Lower Saxony, C=DE

.NET 8 dependency: The installer checks for the presence of %ProgramFiles%\dotnet\shared\Microsoft.AspNetCore.App\8.*. If not found, the user is prompted to download and silently install the .NET 8 SDK from https://aka.ms/dotnet/8.0/dotnet-sdk-win-x64.exe (~200 MB; it includes the ASP.NET Core and base .NET 8 runtimes). Installation runs /install /quiet /norestart, so no reboot is required. If the download fails, .NET 8 can be installed manually from https://dotnet.microsoft.com/en-us/download/dotnet/8.0 before the next launch. Declining the prompt aborts the installation; if .NET is removed later, the app reports it at launch (see System Requirements & Prerequisites).

Managed deployments: To avoid the interactive ~200 MB download at install time, pre-provision .NET 8 on the target image (e.g. via your software distribution tool) before deploying the Firmware Updater. The ASP.NET Core Runtime 8.x alone is sufficient — it satisfies both the installer check and the launch-time check, and on Windows it is a ~11 MB install (https://aka.ms/dotnet/8.0/aspnetcore-runtime-win-x64.exe). The SDK is only what the interactive prompt downloads, so that the same instructions apply on macOS.

Firewall rules: During installation the user is asked whether to add Windows Firewall rules for device discovery. See Firewall rules for details.