For the CFW user, locating the correct NSP file is the safest path forward. Keep your sigpatches fresh, always back up your save using JKSV before installing, and you will be hunting G-Rank Valstrax with online randoms in no time.
While the base game is locked at 30fps on original hardware, community-driven "updates" (often found in NSP or mod formats) provide modern enhancements: Resolution & FPS : High-quality community patches like the MHGU HD Texture Mod monster hunter generations ultimate update nsp