The message "[file name] can't be opened because it is from an unidentified developer." appears on OS X v10.8.x.
How to identify your Operating System (OS).
Install your Brother machine's software from the supplied installation disc or from Full Driver Package. (Windows)
Install the built-in drivers (For Windows 8 or later)
Where can I get the drivers and utilities that work with Mac OS X 10.6?
I cannot install the driver on Macintosh from the CD-ROM supplied with my Brother machine. (For Mac OS X 10.7 or later)
When I run the Firmware update tool or the I-FAX install tool, it asks me about my internet connection method. There are two options: 'Connect directly' or 'Using proxy'. Which one should I choose?
After I installed Sun JavaVM, some applications will not work correctly.