Open the backup folder you just created. Replace the existing data with your downloaded 100% save file. Ensure the filenames match exactly.

If you are looking to move your own data or use a specific file, the process depends on your platform:

Completing the main "story" (Village quests) typically takes about 80-84 hours if starting from scratch.

Monster Hunter Generations Ultimate processes save data entirely client-side. The game itself does not feature an active, aggressive anti-cheat system that scans your inventory for illegitimate item counts when playing online. However, there are two major caveats:

If you decide to use a completionist save file, the best way to keep the game engaging is to set custom challenges. Try tackling the grueling solo, or strip away your endgame armor to try lower-tier hunts using unfamiliar weapons and Hunting Styles.

The Nintendo Switch does not support native cloud saves for every game. If you sold your Switch, sent it for repair, or suffered a microSD corruption, your 500-hour save file is gone. Restarting from scratch in a game with slow gathering animations and a tedious Low Rank is demoralizing. A 100% save gets you back to G-rank immediately.

Before downloading a public save file, keep these critical safety and gameplay warnings in mind: The Risk of Corrupt Save Data

A full completionist run takes approximately 808 hours on average.

Many players spent hundreds of hours on the Nintendo 3DS version ( Monster Hunter Generations or Monster Hunter X ). If you missed the official transfer window to the Switch version, a downloaded save file restores your lost progress. How to Install an MHGU Save File

Link your 3DS and Switch via a generated in the app.

Before committing to a downloaded save file, weigh the advantages against what you might lose from the core gameplay loop.