title: hyperledger fabric upgrading to 1.2 fails : "Local Fabric binary version of 1.1.0-alpha does not match this newer version of BYFN and is unsupported"
body: <p>I'm trying to upgrade to 1.2. I follow the documentation "Upgrade your components network" using byfn. (<a href="https://hyperledger-fabric.readthedocs.io/en/release-1.2/upgrading_your_network_tutorial.html#launch-a-v1-1-network" rel="nofollow noreferrer">https://hyperledger-fabric.readthedocs.io/en/release-1.2/upgrading_your_network_tutorial.html#launch-a-v1-1-network</a>)</p>
  
  <p>When I run : <code>./byfn.sh up -t 3000 -i 1.1.0</code></p>
  
  <p>I got this error :</p>
  
  <pre><code>    LOCAL_VERSION=1.1.0-alpha
      DOCKER_IMAGE_VERSION=1.1.0
      =================== WARNING ===================
        Local fabric binaries and docker images are  
        out of  sync. This may cause problems.       
      ===============================================
      ERROR! Local Fabric binary version of 1.1.0-alpha does not match this newer version of BYFN and is unsupported. Either move to a later version of Fabric or checkout an earlier version of fabric-samples.
  </code></pre>
  
  <p>The documentation says that I have to clean up images and run the example again. So I did, I removed all images with <code>docker rmi -f $(docker images -a -q)</code> and I run the example again.
  Images have been downloaded again and I still got this error about the 1.1.0-alpha version.</p>
  
  <p>Obvisously, I am missing something...
  Does someone have any clue ?</p>