Open the System Menu »Localization» Languages

Click Add New

Fill in the fields as below

Language Name: Indonesia

Code: id

Locale: en_ID.UTF-8, en_ID, en-id, en_id, Indonesia

Status: Enable

Sort: 1

Click Save

Next we have to change the default English language to Indonesian.

Open the System Menu »Settings» Edit

Click the Local Menu Tab »Language» Indonesia

Click the Local Menu Tab »Administration Language» Indonesia

Click Save

Instructions:

1. In Admin, go to Extensions > Installer, and select the OCMOD file

2. Go to Extensions > Modifications and click the Refresh button in the top right corner.