magento change the completed order status into custom order status

Question

I have a order with the 'complete' status. I need to change it to a custom status.

I tried below code;

$orderId = '1000000055';
$order = Mage::getModel('sales/order')->load($orderId, 'increment_id');
$order->setState('custom_status_code', true);
$order->save();

But that not working. Can anyone please help me to solve this issue.

Answer 1

As a suggestion create a status of state complete then assign than custom status.

$orderId = '1000000055';
$order = Mage::getModel('sales/order')->loadByIncrementId($orderId);
$order->setStatus('custom_status_code');
$order->save();

Answer 2

custom order statuses can be configured via the backend. Navigate to System -> Order Statuses and here you can create your custom order status there. Then you can save order using @Amit Bera's code.

you can also get help from here:- http://codelea.com/9xzA1xWDKgpQ/change-order-status-in-magento-via-sql.html
or
http://www.techytalk.info/programmatically-add-new-order-state-and-status-in-magento/