I haven't been able to try the V5 one yet but I did patch and rip the wemerica v2.1 patch. If there is a
SLPM_660.09 file that needs to be imported, be sure to use the
Ps2 CDVDCheck program on this patch so that it works on the CD version, otherwise the rip will not work. Doing this made the wemerica patch work - it did not work before this step.
You can get this program from
here.
What you do is to make a copy of the SLPM_660.09 file in another folder. Then open the above program and click the top right button and locate the SLPM_660.09 file. Then click in the circle in the line that says
"Parchear para funcionar en CD" and then click on the bottom right "Parchear" button. When this is done (very quick) you may then import the SLPM_660.09 file into your ISO using DKZ Studio.