Fix: Unable to Reach Correct Control Values in Syntorial Challenge

Learn how to troubleshoot and achieve accurate control values in the Syntorial Challenge.

Written By Joe Hanley (Super Administrator)

Updated at April 17th, 2026

If you sbumit a patch and notice that a control can’t reach the correct value—such as Unison Spread being unable to reach 0.5—this is a known issue and can be resolved quickly.


What This Looks Like

You may experience something like:

  • A control (e.g., Unison Spread) won’t land on the correct value
  • It becomes impossible to match the target sound, even when everything else is correct

Why This Happens

This issue occurs when:

  • You previously had Syntorial Version 1 installed
  • You upgraded to Version 2
  • The lesson/challenge files did not update properly during the upgrade

As a result, the app is running old Version 1 challenge files inside Version 2. Since some parameter values changed in Version 2, certain controls (like Unison Spread) won’t behave correctly.


How to Fix It

Follow these steps to refresh your lesson files:

1. Open Lesson Pack Downloader

Go to:

Options → Download Lesson Packs

 


2. Remove The Essentials Pack

  • Locate The Essentials
  • Click the trash can icon to remove it

 

Important:
This will not delete your progress. Your progress is محفوظ and will remain intact.


3. Re-download The Essentials

  • Download The Essentials again

 

This ensures you get the correct Version 2 lesson files.


Result

After reinstalling:

  • Controls like Unison Spread will behave correctly
  • You’ll be able to reach all required values
  • Patch submissions should work as expected

If the Issue Persists

If you still experience problems after reinstalling the lesson pack, reach out to support and include:

  • The lesson or patch name
  • A brief description of the issue
  • A screenshot if possible

This helps identify any remaining edge cases quickly.