Apple 10.33 self-signed tool to add source

Apple 10.33 self-signed tools are added from the following sources:

1. Open the self-signing tool and select the software to be self-signed.

2. Click the "Add Source" button in the pop-up dialog box.

3. In the pop-up dialog box, enter the URL address of the source to be added.

4. Click OK and wait for the self-signing tool to automatically download the required certificates and configuration files.

5. The self-signing tool will automatically sign after downloading, and can be installed on the device for use after signing.