These are simple instructions for those new to the patch and haven't added plugins to their PSP before. If you have no idea what PSP plugins are or what "seplugins" is, this guide is for you!
- Check your ISO size is exactly 1,207,140,352 bytes. You can do this on Windows by right-clicking the ISO and selecting Properties.
- Note that if it isn't you may continue but we will not be to help you if any problems occur -- the patch is only for unmodified ISOs!
Back up your game save! Go into PSP/SAVEDATA and copy the ULJM05800 folder to your computer.
- The root of the storage is the very first thing you see when you access it on your computer. On Windows it's a drive letter, like D:\, E:\ etc.
Do not try and extract MHP3RD_DATA.bin! Just put it on the PSP with the plugin.
When you want to update the patch just follow steps 4 to 7 above.