Information about the availability of the nRF Connect SDK and toolchain versions is contained within the online indexes.
There are separate indexes for the SDK and for toolchain. The index are composed of two parts:
- An online config file that directs the
sdk-managercommand to the appropriate online index. - The index itself that contains the list of SDKs or toolchain versions with the associated metadata.
By default, nrfutil sdk-manager points at an SDK configuration file and a toolchain configuration file that are hosted on files.nordicsemi.com. If you want nrfutil sdk-manager to use other configuration files, use the sdk-manager environment variables to configure that behavior.