The simpler media website CMS
Forum search only. You might also want to search on the main site's user guide.
Forum RSS
Visit the troubleshooting guide.
Visit the paid support page.
Your support helps pay for this server, and helps development of zenphoto. Thank you!
Visit the donations page
Comments
The recommend procedure would be to use the backup to backup the database. Then install the older version and re-run setup.
Then if you upgrade you could import the backup again.
For testing I would recommend to setup a 2nd site. (of course never update a live site before testing that everything works with a test site).