Reinstalled 3.3.0.16 using the image from the F(x)tec forums, and then upgraded it to 3.4.0.24 using the command line

The upgrade seems to have worked.

However, the issue of three-dozen partitions appearing in the storage settings has returned, and none of the partitions is the microSD card so restoring the backup taken is not possible.

doesn't do anything as everything is already up to date.

The device is fantastic, but it seems like the adaptation needs to be polished a bit, and there doesn't seem to be an easy way to contribute financially to the porter to allow them to spend the time to polish the port of SailfishOS to the Pro1 to prevent such issues as what I am encountering.

EDIT: The way to contribute financially to the port is actually simple and easy and I just wasn't paying attention to the first post.