flutter update dart sdk for specified project code example

Example 1: update flutter

flutter upgrade

Example 2: unable to update dart sdk. retrying

Add below path to Environment variable

User Variables

C:\flutter\bin; C:\Windows\System32

%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\

System Variables

C:\flutter\bin

C:\Windows\System32\

Example 3: unable to update dart sdk. retrying

restart your pc and delete flutter folder in C directroy then reinistall flutter and run flutter doctor

Example 4: flutter change to beta channel to dev

$ flutter upgrade

Flutter 0.5.1 • channel beta • https://github.com/flutter/flutter.git
Framework • revision c7ea3ca377 (9 weeks ago) • 2018-05-29 21:07:33 +0200
Engine • revision 1ed25ca7b7
Tools • Dart 2.0.0-dev.58.0.flutter-f981f09760