administrator/components/com_admin/script.php will it not ? If so then it will negate the need to view the file and find the listed files
I have reservations about advising to manually update because if it is needed then there is something seriously wrong with the site. That 'something' could be a Hack. Surely far better to :
Delete the folders/files
Install Joomla of the same version to a new database
Install the 3rd party extensions into the new Joomla
Edit the configuration.php to connect to the original database
Then update normally
imho that is easier, quicker and rectifies the cause of the update failure (including removing of any possible hack !!!)