I also note the topic convert from phpbb 3.0.x to phpbb3.2.0. It looks highly relevant. Does it still work?
Edit: I have been studying the above topic. Also, although I had not remembered it, I had gotten previous assistance in updating. I am feeling increasingly confident. I may have some specific questions, but not yet.
Edit: I have continued to study, and think that probably I don't have any questions yet. I am getting a better understanding. I think I started this topic prematurely. I still have some dread that I will ruin what I have in trying to upgrade, but the dread is almost gone.
Edit: Well, I was indeed able to accomplish the upgrade satisfactorily. I followed the instructions in the above referenced topic. There was just one part that was unclear, having to do with the FILES and IMAGES folders, which were supposed to be left in the root folder. That suggested that those files should be deleted from the folders being uploaded. That was not part of the instructions, however, so I left them in the files and folders being uploaded. That led to being asked whether I wanted to overwrite some existing files, which sounded like what was not supposed to be necessary. I chose overwriting them, and as far as I know, everything remains okay. So, I guess I will not need help in upgrading. I did learn a lot with my studying. I am not an IT person.