By default, SCS Software save files are not human-readable to protect data integrity and discourage minor cheating. Decrypting allows: Save Editing
"Decrypting a mod for personal use on your own PC is a grey area. Decrypting and then redistributing it—even with 'small changes'—will get you banned from this forum permanently." sii decrypt scs forum
This led to the "D.I.R.T.Y." encryption system. When users encounter this encryption, standard tools fail. This is the primary reason searches for "sii decrypt" spike—especially after a major game update or the release of a new DLC. By default, SCS Software save files are not
rely on the decryption code to inject custom jobs into the game world. How to Use the Original Tool Configure Game Format : You must change g_save_format config.cfg When users encounter this encryption, standard tools fail
Open a suspect .sii file in Notepad++. If you see readable text, stop—it doesn't need decryption. If you see binary garbage, proceed.