A version of the below with screenshots is available on the sortitoutsi forums: https://sortitoutsi.net/content/61133/fm2023-licensing-and-real-name-fix-file-for-beta-not-released-yet

Step 1:

Go to: 

(for PC Steam users)
Program Files (x86)\Steam\SteamApps\common\Football Manager 2024\data\database\db\2400

[\Program Files (x86)\ could be \Program Files\ depending on your set up.]

(for PC Epic Games users)
Program Files\Epic Games\FootballManager2024\data\database\db\2400

(for Mac users)
USERNAME \ Library \ Application Support \ Steam \ SteamApps \ Common \ Football Manager 2024 \ Data \ db \ 2400

You can find these folders by clicking, in the Finder, the Go menu in the menu bar, then choose Go to Folder and type the folder path name (obviously inserting your username), then click Go.

(Mac Lion users)
use the above path, but the Library folder will be hidden. Use this link to learn how to display it: http://osxdaily.com/2011/07/04/show-library-directory-in-mac-os-x-lion/






Step 2: 

Delete the dbc, edt and lnc folders from the folders above, but leave the 23xx_fm folder alone. I repeat, you must DELETE the dbc, edt and lnc folders. Replacing/merging won't see all the changes implemented





Step 3: 

Copy the dbc, edt and lnc folders from this download into the folders mentioned in step 1.





To make sure the files have been applied correctly, go to the English Premier Division in your saved game, and it should be renamed to Premier League respectively.

If you're confused at any step, please watch this video: https://youtu.be/QC79szPrmMk