Here's why:
* Regional Locking: The 3DS is region-locked. This means it's designed to work with games and content specific to the region where it was purchased. Changing the system language could potentially lead to incompatibility issues with games and other software.
* System Limitations: The 3DS software is not built to allow users to change the system language after initial setup.
However, there are some things you can do:
* Use an English-Language Game: Many 3DS games offer English language support, even if your system language is different.
* Use a 3DS with English Language: If you want to use the 3DS with English as the system language, you'll need to purchase a 3DS that was originally set up for that region.
* Use an English-Language Browser: Some 3DS models allow you to use a web browser. You can access websites in English using this browser.
* Install Custom Firmware (CFW): This is a more advanced method and requires modifying the 3DS's software. CFW allows you to install custom themes, languages, and other modifications. This is not recommended for beginners as it can void your warranty and potentially damage your 3DS.
Remember, changing the system language is not officially supported by Nintendo. Using unofficial methods can be risky and may lead to compatibility issues.