Unable to find a specification for `Firebase` (adding Firebase SDK by using CocoaPods)
<p>I tried to add Firebase SDK to my iOS app through CocoaPods.</p>

<p>I followed <a href="https://cocoapods.org/pods/Firebase" rel="nofollow noreferrer">https://cocoapods.org/pods/Firebase</a> and <code>$pod install</code>
gave me this error:</p>

<blockquote>
  <p>Unable to find a specification for <code>Firebase</code></p>
</blockquote>

<p>I followed some other pages people's suggestions like:</p>

<pre><code>pod update Firebase --verbose
</code></pre>

<p>Or changing pod <code>'Firebase'</code> to pod <code>'Firebase', '&gt;= 2.3.2'</code> in Podfile.</p>

<p>None of them worked. At the end I gave up and followed Manual Alternative <a href="https://www.firebase.com/docs/ios/alternate-setup.html" rel="nofollow noreferrer">https://www.firebase.com/docs/ios/alternate-setup.html</a>.</p>

<p>I appreciate for help to resolve CocoaPods Method.</p>