This page details the technologies that can be used in the network composer

You can switch Fabric version after downloading the source code. Go to the configuration files named (you have one for each organization you have added).

As you can see the variable NODE_IMAGETAG is set on 2.2.0.

Note: since each organization can contain one or more nodes, you will find in the files as many NODE_IMAGETAG as there are nodes. You can change the binaries for just one node in the organization or for as many as you like.

To switch version just change that number by hand as many times as you have files.

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