Otp.bin Seeprom.bin -

Similarly, other tools like for dumping and manipulating the Wii U's file system require both files as arguments ( --otp otp.bin --seeprom seeprom.bin ) to decrypt the data pulled from the console's NAND.

otp.bin

| Feature | otp.bin (OTP Dump) | seeprom.bin (SEEPROM Dump) | | :--- | :--- | :--- | | | One-Time Programmable (Read-Only) | Re-writable EEPROM | | Typical Size | ~128 bytes (varies by console) | 512 bytes (Wii U) | | Primary Content | Immutable hardware root keys, console's factory "birth certificate" | Console ID, disc drive key, USB key seed, MAC address | | Backup Criticality | Extremely High. Loss without SEEPROM is a permanent brick. | Extremely High. Loss without OTP breaks drive and online play. | | Recovery Scope | Can only be recovered with a valid seeprom.bin from the same console. | Can be partially recovered with a valid otp.bin from the same console. | otp.bin seeprom.bin

You should never edit these files in a generic hex editor unless you understand the checksum algorithm. Here is the professional workflow. Similarly, other tools like for dumping and manipulating