To install a specific version, use the nrfutil sdk-manager install command and specify the version you want to install.
For example, the following command installs both the SDK bundles and its corresponding toolchain bundle for the nRF Connect SDK v2.7.0:
nrfutil sdk-manager install v2.7.0
The installation can take several minutes.
If you have either an SDK or a toolchain bundle already installed, this command installs the missing bundle for the provided version. If the SDK version you are installing is reusing a toolchain version that you have already installed, the command will not install the toolchain again.
You can use the --region flag to install SDKs and toolchains from region-specific indexes. For more information, see Installing region-specific SDKs and toolchains.
For more information about the install command, see Installing and uninstalling with SDK manager.