Open and click on Open UMDGen to select our ISO.
     In the left panel we went to '\ PSP_GAME \ SYSDIR \'.
     Once there, we right click and select extract to EBOOT.INI saving the file to somewhere safe.
     We're going to File, File List, Export and save the text file.
     Connect your PSP to your PC and extract the zip PRXDecrypter program at the root of the MS (Replace).
     Create a folder called ENC in the root of the MS and copy the EBOOT.BIN inside.
     Disconnect your PSP and run the program, choose menu decrypt.
     Exit to Exit.
     Now copy the decrypted EBOOT.BIN found in ENC folder to your PC.
     Open the Eboot Patcher and we click on Browse to search our EBOOT decrypted.
     Go!.
     Once again our patching need to build ISO.
     UMDGen going again in the directory '\ PSP_GAME \ SYSDIR \' and we right click to go to the Add Existing File and select our EBOOT patching.
     We're going to File, File List, Import and select our text file previously saved in a safe place.
     We finally click Save and save our ISO ready for use.