I have just upgrade our Blog Server from BlogEngine.NET 2.8 to 2.9, all seems to have gone well, as before basically it is just copies files and adds s table to the DB schema, so…

  1. backup your blogs folder and SQL DB in case of problems
  2. delete the contents  of the blogs folder
  3. copy in the the new release from the zip
  4. run the SQL upgrade script on your DB
  5. fix the SQL connection string in the web.config
  6. copy in the theme and extension files you were using as detailed in the release notes, but I found using updater utility did a great job for me

As many of our sites were using the standard theme, it picked up the new bootstrap based version. Anyone with the other themes just see what they saw before