OK, I just tried to update the theme and this is what it told me:
The update process is starting. This process may take a while on some hosts, so please be patient.
Enabling Maintenance mode…
Updating Theme Adventurous Pro (1/1)
An error occurred while updating Adventurous Pro: Update package not available.
Disabling Maintenance mode…
All updates have been completed.
Return to Themes page | Return to WordPress Updates page
Now what?