from tinman:

I used this method for a DC based 5.00 M33-3 because, it does not change DC 7, everything works, and uses the same files. (I only renamed one) I only added the 2nd menu which simply runs Alex's 5.00 M33-3 installer just like you would from the XMB. You will need the 5.00 SCE updater in the ms0:/PSP/GAME/UPDATE/ folder. You can also take screenshots in the 4.01 version of DC 7 only by pressing the note key.

Just copy the files to the root of your MS.

Enjoy