Unable to update to 1.3.0

I just got my Kompakt in today. Trying to sideload apps with mudita center, I found that it went blank when opening the manage files tab. Figured out from another forum post that I was still on OS version 1.1.0, so I needed to update one by one to get to 1.5.0. I updated to 1.2.0, restarted, and was prompted to update to 1.3.0. However, whenever I click the update button, it tells me that I have no wifi or data connection, so I cannot update. This is incorrect, I do have both wifi and data. I am able to get updated weather info and send/receive texts, however no matter what I do and how many times I restart, forget the network, toggle wifi on/off etc, it simply won’t allow me to update past 1.2.0.

So to be clear, I successfully did the initial software update while setting up, and a second update to 1.2.0, but cannot install 1.3.0. Any help would be greatly appreciated as I cannot start using this phone until I am able to sideload.