It did not work.
"It did not work" is not helpful. You expected it to do something. It did something. All we know from this description is that the something you expected it to do, and the something it did, weren't the same thing.
The simplest answer, especially if you don't have any contribs installed, is to do as @JPP suggested and use the console backup. After you install 9.1, the first thing it will ask you is whether you want to restore from a backup. Answer yes, and it will restore your users, data, configuration, etc.