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2) Update the new database in CSPM.
Before you start, make sure you have the latest matlab CSPM files, and a recent version of MySQL (preferably 5.6+) and MySQL Workbench (preferably 6.1+). Copy the new files to ...\matlab\spm12b, making sure you get the ...\matlab\spm12b\toolbox\CSPM files.
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Terminology note: what we call "database" is what MySQL calls "Schema."
Update the new database in CSPM
Start SPM12, CSPM.
Go to local settings (CSPM "options" menu); enter the MySQL Database parameters. Click "Test" to check the connection.