The v1.5 update includes all critical fixes from previous patches:
| Feature | Encrypted (eShop/.CIA) | | | :--- | :--- | :--- | | Used for | Real 3DS with official firmware | Emulators (Citra), Flashcarts (Sky3DS), Homebrew | | Signature | Signed by Nintendo | Signature removed/unlocked | | Region Lock | Yes (USA requires USA update) | No (EUR update works on USA game) | | File Size | ~130 MB | ~130 MB (no size change, but header stripped) | pokemon y update 15 decrypted 3ds eur usa updated
Nintendo 3DS game cartridges and digital downloads are encrypted via proprietary security keys. The v1