db-schema/db_scripts/diff/15824.down

use kamailio;
alter table mobile_push_registrations change `type` `type` enum('gcm', 'apns', 'fcm') not null;
update mobile_push_registrations set `type` = 'gcm' where `type` = 'fcm';
alter table mobile_push_registrations change `type` `type` enum('gcm', 'apns') not null;