1. Download Toukiden Japanese ISO here.
2. Download the English Patch here.
3. Download UMDGen v4.00
4. Extract the ISO create a new folder name it “Toukiden English” and copy (not cut) the iso inside of it, so you have 2 copies of the iso.
5. Open the ISO inside “Toukiden English” folder with UMDGen.
Click the + sign before PSP_GAME
Click USRDIR folder
Right Click LINKDATA_A.BIN file
Choose “Apply PPF Patch to Selected File”
Search for the patch you downloaded on Step 2 (ppf.ppf)
Select Apply on the little window that comes up.