: Look at the "Build Number" in your phone's settings or the information displayed in Download Mode . The binary version is typically the 5th character from the right (e.g., if the version is J400MUBU**B**... , the binary is B or the corresponding number).
: You can flash a combination file with the same or higher binary version, but you cannot downgrade to a lower binary version once your device has been updated. How to Use the File what is a combination file for Samsung : Look at the "Build Number" in your
: It allows technicians to downgrade certain security patches to perform repairs that might be blocked on newer official versions. Critical Selection Criteria: The "Binary Bit" if the version is J400MUBU**B**...