How can I download Apple Configurator 2.12.1?

It doesn’t. I bought a refurb 2019 Mac Pro on the Apple online refurb store. It was relatively inexpensive, because it has a single 256GB SSD. I bought the 8TB SSD Kit, and after I remove the 256GB SSD, and install the two 4TB SSDs, I will need to connect the 2019 Mac Pro to another Mac running Apple Configurator, in order to restore the T2 Security Chip firmware on the new SSDs. I was hoping to perform this task with my 2012 Mac Pro, running OS 10.14.6. I need Configurator 2.12.1 to run on OS 10.14.6. But it looks increasingly unlikely I can obtain Configurator 2.12.1, so I’ll need to borrow a Mac running OS 10.15.6 so I can get the current Configurator, and then restore the security firmware on the 4TB SSDs.

dialabrain, to quote Ed McMahon, “Yes! You are correct sir!”. The Apple Configurator that displays after a search on the App Store is version 2.13.3, which requires Mac OS 10.15.6 or later. I need Apple Configurator 2.12.1, which will install on my 2012 Mac Pro, OS 10.14.6 Majave. If there is a way to get this older version on the App Store, I haven’t found it.

Well then, I am screwed. I never downloaded Apple Configurator before, so I won’t be able to get the older version. I can probably borrow a Mac running OS 10.15.6, and then download the current version.

Borrowed my sister's 2015 MacBook Pro running Catalina 10.15.6, got current Apple Configurator, now my 2019 Mac Pro is a functional computer, rather than a $19,000 paper weight.