– Official Odin refuses to flash unsigned or modified firmware (like custom binaries). A patched version may disable this, making custom development possible without compiling signed images.
Samsung Odin3: How to use Odin to Install Stock Firmware/ROM odin3v31413bpatched full
Often used for modern Samsung devices (like the S10, S20, and Note series) where standard Odin might fail with an "Auth" error. – Official Odin refuses to flash unsigned or