Use a tool like (for .ips files) or xdelta UI (for .xdelta files). Select your original Japanese ROM and the patch file. Click "Apply" to create a new, English-patched .nds file.
The Ultimate Guide to the Inazuma Eleven 3: Sekai e no Chousen! Spark English Patch
Historically, DS players relied on older, incomplete "Open Translation" beta patches (like v0.5 or v0.6) that left most of the story in Japanese. However, as of September 2025 full English translation for the Nintendo DS version of Inazuma Eleven 3: The Ogre has been released. The High-Quality Alternative: Full Patch