Use the nrfutil sdk-manager toolchain subcommand to interact directly with toolchain bundles.
Tip
You can use the --region flag with the sdk install, toolchain install, and toolchain search subcommands to interact with region-specific indexes. Alternatively, you can set the NRFUTIL_REGION environment variable to avoid specifying the --region flag on every command. For more information, see Installing region-specific SDKs and toolchains, Searching for region-specific versions, and Environment variables.