64 Rom Patcher - Nintendo

Patching a ROM you do not legally own the original cartridge for is piracy. The law generally allows you to create a backup of software you own. Applying a patch to that backup falls into a legal grey zone (fair use for interoperability/archiving). However, distributing the patched ROM is strictly illegal.

: It is often used to ensure ROM hacks work correctly on flash carts like the Everdrive. Other Essential Patching Tools nintendo 64 rom patcher

made ROM files accessible to everyone, creating a perfect environment for the first real "hacks" to emerge. The First Milestone: Patching a ROM you do not legally own