How do you add sources to your installer after the initial unlock?I will show you step by step how to do this via screenshots.
Make sure you’re wifi or EDGE connection is on.
1) Start your installer program by tapping onto the icon.

2) Click on sources when the app has started.

3) Select the Edit button.

4) Press the Add button

5) Type a Source (eg www.iphonefreakz.com/repo.xml).
Press ok when you’re finished and wait for the sources to be refreshed.

When you go to install now. A new source will be added.
Here you will be able to download the apps + games that iphonefreakz.com will release in the near future.
Howto remove a source when it’s no longer working?

1) Open installer, go to sources, select edit.

2) Then press the - sign for the source you would like to remove.
A delete button will show, and so you can delete the source.

That’s all folks