First, I need to check if HDD Regenerator 171 is still widely available. The official website is hard-disk-regenerator.com, which is managed by the developer VaiNT (Vadim G. Khitrov). I should confirm that the official site hosts the latest version and perhaps older versions. If the user wants version 171 specifically, maybe it's not available on the official site anymore. However, if it is, that would be the best place to recommend.