For advanced users: Use the official SCS Blender Tools to extract and repack SII files using the proper key database.
| Issue | Possible Cause | Solution | | :--- | :--- | :--- | | | The file isn't actually encrypted, or you're using the wrong tool. | Double-check the file format. Some .sii files are plain text and can be opened directly with Notepad. | | Online tool doesn't work | The service might be temporarily down or the file size too large. | Try a different online tool or use an offline alternative. | | Game crashes after replacing edited save | You introduced an invalid value or corrupted the file structure during editing. | Restore your original backup. Edit very carefully, changing only one small thing at a time to pinpoint the problem. | | "SII Decrypt only work at 50%" error | Partial decryption or unsupported file version. | This may happen with newer game versions. Make sure you're using the most up-to-date decryption tool available. |
Within seconds, the decrypted data will be displayed in your browser. You can then copy this text or download it as a new file. This plain-text version is what you will edit with any standard text editor (like Notepad++ or Visual Studio Code).
The required by your SII infrastructure (AES-GCM, AES-CBC, ChaCha20?).
Go to your preferred online SII decryption tool (like sii-decode.github.io ). Make sure you have a good internet connection.
This guide explores how to handle these files, the risks of online decryption, and the best practices for managing your tax data. Understanding SII Files
A command prompt window will flash briefly, and your game.sii file will instantly be converted into plain text. Conclusion
Online SII decryptors have emerged as a streamlined alternative. These web-based platforms allow users to upload an encrypted file, process it on a remote server, and download a plain-text version (usually in .txt or readable .sii format) within seconds. The appeal of these online tools lies in three areas:
Go to sii-decode.github.io . It's a good practice to check that you are on the correct URL to avoid any potential impersonator sites.
A modern TypeScript library for developers. It uses AES-256-CBC decryption and supports all SII formats (plain, encrypted, binary). It's a great choice if you're building your own tool or script.
: Copying an existing profile to test out expansive modifications (like ProMods or custom map packs) without risking your primary, unmodded career save.
If your billing system shows an error indicating it cannot decrypt or read a response from the SII, check these common technical issues instead of looking for an online tool: Likely Cause The temporary token expired. Request a new seed and regenerate the token. Signature Error The XML structure changed after signing. Re-sign the original XML document locally. Expired Certificate The digital certificate passed its valid date. Purchase a renewal from an authorized Chilean CA. Conclusion
