He never bought the official Ultimate upgrade. But he did buy the Warriors Orochi 4 Ultimate soundtrack on iTunes, and a Hades figure from AmiAmi. In his mind, he’d paid his dues.
He also discovered that the upgrade wasn’t just a flag. The game checked for a specific title ID ( 0100E2900B6A6000 for US, 0100E2B00D48A000 for JP/EU). Installing the wrong region’s update would break DLC compatibility. He triple-checked: US base, US update, US DLC. Epilogue: A Stable Slice of Chaos Six months later, Kaito had logged 200 hours. He cleared Infinity Mode’s 100 floors with Hades, maxed out every character’s proficiency, and even used Edizon to unlock the “Play 1,000 battles” achievement because life is short. His Switch’s emuMMC was a time capsule of Warriors Orochi 4 Ultimate —the definitive, complete, offline-forever version. Warriors Orochi 4 Ultimate Switch NSP UPDATE DLC
Solution: He used Tinfoil (the homebrew app, not the foil) with the “install unsigned code” option enabled. Then he ran Lockpick_RCM to dump his own Switch’s keys, converted the DLC NSP to a “proper” install using NSC_Builder , and reinstalled. The costumes unlocked. Some purists on the forums argued that converting the whole thing into an XCI (cartridge image) was cleaner. Kaito tried it using SAK (Switch Army Knife). He merged the base + update + DLC into a single 17.3GB XCI, but loading times increased slightly—the Switch’s SD card reader struggled with the large file. He reverted to separate NSPs installed to NAND (internal storage) for faster access. He never bought the official Ultimate upgrade
Second attempt: green progress bars. Base installed. Update installed. DLC installed. The home menu icon changed from the old Warriors Orochi 4 cover to the golden Ultimate art. Kaito exhaled. He launched the game. The Koei Tecmo logo shimmered. Then—black screen. “The software was closed because an error occurred.” He also discovered that the upgrade wasn’t just a flag
His heart sank. He checked forums: common issue. The solution? Boot into maintenance mode (hold volume up/down on launch), clear the cache, then reboot. He did. The second launch worked.
One night, a newer user on the Discord asked: “Where can I find the Warriors Orochi 4 Ultimate Switch NSP with all updates and DLC?”
Prologue: The Cartridge That Wasn’t Enough It began like any other Tuesday for Kaito, a veteran musou fan with a shelf full of Dynasty and Samurai Warriors games. He had bought Warriors Orochi 4 at launch on Switch—cartridge in hand, plastic still smelling of factory newness. He loved the chaotic deity-smashing, the ridiculous pairings (Zeus and Lu Bu? Yes.), and the portable chaos.