Once you have found the "Inazuma Eleven Strikers 2012 Xtreme save data best" file, you need to install it.
For purists, here’s the roadmap to a legit 100% save (~150–200 hours): inazuma eleven strikers 2012 xtreme save data best
Given the age of the game (2012), official distribution channels are dead, but the community is alive. Here are the top sources for the best IE12X save data: Once you have found the "Inazuma Eleven Strikers
Warning: Avoid random "YouTube clickbait" saves. Many are just empty files with a virus-laden executable. Stick to trusted .bin or .gci files. Warning: Avoid random "YouTube clickbait" saves