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Updating Dart SDK for Flutter

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Problem Description: Flutter uses Dart SDK version 2.1.2, while user wants version 2.2.0
Installing 2.2.0 version independently doesn't update Flutter
Replacing flutter/bin/cache/dart-sdk causes snapshot problems
Solutions: Use flutter upgrade command to update both Flutter and Dart SDK
Switch to dev or master channel for latest updates
Update pubspec.yaml based on desired Flutter channel
Use flutter channel beta for testing new features
Additional Considerations: Flutter doesn't use local Dart SDK
Different Flutter versions may exist on system
Environment variables need to be updated for Flutter SDK
Chocolatey can be used for Windows SDK updates