To get your official 2013 Roster Update for FIFA 13 just go to your Origin, open FIFA 13, select Customise Fifa > Edit teams > Change squads/rosters > Download Updates
If you have server connection issues you can download the updated database file down bellow thanks to Darrek1988 & scouser09!
Remember that this database file update is not compatible with any other mods that have database modifications and you must start a new career after you apply this database!
ALWAYS do a backup of your db folder!
Read the “Read Me” file to install the update correctly!