The Download Center in the MobileFirst Operations Console that you are talking about is part of MobileFirst Foundation 8.0, whereas what you are using is MobileFirst Platform Foundation 7.x.
What you are using in the screen shot is MobileFirst Studio for MobileFirst Platform Foundation 7.1. In MobileFirst Foundation 8.0 there is no longer a studio component as you may be accustomed to.
Instead, in v8.0 what you need to do is to either download the Developer Kit which will extract a pre-configured Liberty server with MobileFirst Server deployed to it, in which case after starting it and visiting the console, you will then see the downloads center you are looking for.
Or, instead of downloading the DevKit, you can start a server instance on IBM Bluemix.