You should only use this tool on ESD files that you have legitimately obtained. For example:
Download the ESD Decrypter V6.7 archive and extract it to a folder on your desktop. Move the ESD File: Place your file into the same folder where you extracted the decrypter files. Run as Administrator: Right-click decrypt.cmd (or the equivalent executable) and select Run as Administrator Choose Your Option: ESD Decrypter V6.7 ESD To ISO Converter Software Free