The current Dart SDK version is 2.10.4. how can I change the version into a upper version .? In a beta or dev channel

Update your pubspec.yaml depending on the flutter channel you want to work on:

If you are on stable channel :

environment:  sdk: ">=2.10.5 <3.0.0"dependencies:  cupertino_icons: ^1.0.0

If you are on beta channel :

environment:  sdk: ">=2.12.0 <3.0.0"dependencies:  cupertino_icons: ^1.0.1

Then if you are on stable channel (or beta),

flutter channel stable# or flutter channel betaflutter upgradeflutter pub get

flutter dart dart-sdk

flutter channel betaflutter upgrade

CodeHunter