It is important to clarify from the outset that unless you are dumping a copy of a disc you personally own for backup purposes (which requires specific hardware and legal allowances that vary by country).
If you only care about better lighting without legal risk, skip the ISO process entirely. Buy the Xbox 360 disc and play it on an Xbox Series X with HDR enabled – it solves 80% of the visibility issues without a single patch. descargar+sonic+unleashed+xbox+360+iso+better+light+free
Mods exist to enhance games you already own, not to justify stealing them. Enjoy Sonic Unleashed responsibly. It is important to clarify from the outset