When I switched to using a blank theme, the WordPress dashboard disappeared.
To re-activate the previous theme I was using (which did have dashboard support), I reset the values of template, stylesheet and current_theme fields in the wp_options table to the previous theme (by manually entering the theme name). However, this failed to restore the dashboard. I did restart both the MySQL database and the Apache web server. I am using the Bitnami WAMP stack.
How can I manually activate my previous theme without browser access to dashboard?