When you follow my link and follow the prompts to the actual download page, you will see the following instructions:
Step1. Download the tool.(linux-brprinter-installer-*.*.*-*.gz)
The tool will be downloaded into the default "Download" directory.
(The directory location varies depending on your Linux distribution.)
Step2. Open a terminal window and go to the directory you downloaded the file to in the last step.
Step3. Enter this command to extract the downloaded file:
Command: gunzip linux-brprinter-installer-*.*.*-*.gz
Step4. Get superuser authorization with the "su" command or "sudo su" command.
Step5. Run the tool:
Command: bash linux-brprinter-installer-*.*.*-* Brother machine name
Step6. The driver installation will start. Follow the installation screen directions.
When you see the message "Will you specify the DeviceURI ?",
For USB Users: Choose N(No)
For Network Users: Choose Y(Yes) and DeviceURI.
The install process may take some time. Please wait until it is complete.