The simple way to update q2a to higher version can be done in two steps.
Now at your site it will ask you to update database, click the button and its done.
To check the version you can do it from stats in admin pannel.
Hope this help.
Welcome to the Q&A site for Question2Answer.
If you have a question about Q2A, please ask here, in English.
To report a bug, please create a new issue on Github or ask a question here with the bug tag.
If you just want to try Q2A, please use the demo site.