Here is the critical nuance: by Steve Gibson. It is not a finished, public release. As of late 2023 and into 2024, Steve has been releasing beta versions to registered owners of SpinRite 6.0. These beta versions (6.1, 6.2, etc.) are delivered as updates to existing customers, often as simple .COM or .EXE replacement files.
The official Spinrite website offers the Spinrite 6.1 ISO download link. However, be aware that the software is not free, and you will need to purchase a license to use it. There are also some third-party websites that offer the Spinrite 6.1 ISO download, but be cautious when downloading from these sites, as they may bundle the software with malware or other unwanted programs. Spinrite 6.1 Iso Download
Once you have your legitimate bootable USB, here is how to use it: Here is the critical nuance: by Steve Gibson