The current Dart SDK version is 2.7 2

There are several ways to upgrade or downgrade the Flutter SDK version. It can be done by changing the git branch of the Flutter SDK repository, changing the channel, or downloading a specific version from their website . To upgrade to the latest version, you can use the flutter upgrade command.

The Dart SDK has the libraries and command-line tools that you need to develop Dart web, command-line, and server apps . To get the Dart SDK, see Get Dart. If you’re developing Flutter apps, then you don’t need to separately download the Dart SDK; just install Flutter.