UPDATE `#__extensions`
   SET `params` = REPLACE(`params`, '"negotiate_tls":1', '"encryption":"tls"')
 WHERE `name` = 'plg_authentication_ldap'
   AND `type` = 'plugin'
   AND `element` = 'ldap'
   AND `folder` = 'authentication'
   AND `client_id` = 0
   AND `params` LIKE '{%"negotiate_tls":1%}';

UPDATE `#__extensions`
   SET `params` = REPLACE(`params`, '"negotiate_tls":0', '"encryption":"none"')
 WHERE `name` = 'plg_authentication_ldap'
   AND `type` = 'plugin'
   AND `element` = 'ldap'
   AND `folder` = 'authentication'
   AND `client_id` = 0
   AND `params` LIKE '{%"negotiate_tls":0%}';

UPDATE `#__extensions`
   SET `params` = REPLACE(`params`, '"encryption":"none"', '"encryption":"ssl"')
 WHERE `name` = 'plg_authentication_ldap'
   AND `type` = 'plugin'
   AND `element` = 'ldap'
   AND `folder` = 'authentication'
   AND `client_id` = 0
   AND `params` LIKE '{%"host":"ldaps:\\\\/\\\\/%}';

UPDATE `#__extensions`
   SET `params` = REPLACE(`params`, '"host":"ldaps:\\/\\/', '"host":"')
 WHERE `name` = 'plg_authentication_ldap'
   AND `type` = 'plugin'
   AND `element` = 'ldap'
   AND `folder` = 'authentication'
   AND `client_id` = 0
   AND `params` LIKE '{%"host":"ldaps:\\\\/\\\\/%}';