drush

In order to disable the reCaptcha module manually, follow this process

1. Get into the databas and execute this query

UPDATE system SET status = 0 WHERE name = "recaptcha";

2. Clear the cache, if possible with drush

drush cache-clear

3. Clear the cache, through SQL

In order to update drupal with drush use the next command

Command

drush up

Sample

username@localhost [~/www]$ drush up

In order to update only the core

Command

drush up drupal

Sample

username@localhost [~/www]$ drush up drupal