title: How to use the flutter downgrade command to switch to an older version of Flutter SDK?
body: <p>I got the following error when trying to switch to an older version (1.17.4) from my current version (Flutter 1.20.1 • channel stable).</p>
  <pre><code>&gt; flutter downgrade
  There is no previously recorded version for channel &quot;stable&quot;.
  Channel &quot;beta&quot; was previously on: 1.17.0-dev.3.1
  </code></pre>
  <p><code>flutter downgrade</code> is the recommended way for switching versions instead of the deprecated <code>flutter version</code> command. However, there's no documentation I may refer to how it is used.</p>