Create a .txt file with NotePad/WordPad, and paste the following into it (two different codes for NTSC-U and the Canadian release):

[FOR NTSC-U] #Speed
D0078D0E FBFF 8007C8E4 01FF

[FOR NTSC-Canada (US with UK English, French and German languages)] #Speed
D0078D0E FBFF 3007C8E4 01FF

Now save the file. For the filename, there are two possibilities: if you're using the US version, name it SLUS_014.15.txt , but if you're using the Canadian version, name it SLUS_014.17.txt (make sure to type .txt as otherwise it will convert it to a '15' or '17' file). For the location, place it inside the cheats folder of ePSXe.

Open up ePSXe, and then HP1. Now press Esc to go to the emulator's main menu, and click on Options, then Cheat codes. You should see a box on the left saying [0]Speed. Click on that, then click Enable and then OK. Go to Run on the main screen and then Continue, and when you press L1, you should now have Harry go at fast speed.

IMPORTANT: this cheat does not work properly on ePSXe 2.0 or 1.9.25; as far as we know, 1.9.0 doesn't cause any trouble. Console set-up can also work.