Cydia Impactor Error Line 37

The "Line 37" error is a symptom of an aging tool fighting against modern security. By using the correct password workaround or upgrading to current software, you can get back to sideloading your apps.

If you must use Cydia Impactor and see "Line 37": cydia impactor error line 37

Since line 37 involves teams.count != 1 , you need to clear the slate. The "Line 37" error is a symptom of

Troubleshooting Cydia Impactor: An Analysis of Error Line 37 Troubleshooting Cydia Impactor: An Analysis of Error Line

The is not a bug you need to fight—it is a tombstone for an outdated tool. While the App-Specific Password method will work for a tiny fraction of users still on macOS Mojave or iOS 12, the vast majority of modern iPhone users must move on.

However, the prevalence of this error in recent years is largely attributed to changes made by Apple regarding the "Sign in with Apple" feature and server-side protocols. Apple modified how iTunes authentication handles external requests, effectively breaking compatibility with the original Cydia Impactor tool. Because saurik ceased active development of the tool around 2019, it was not updated to accommodate these new security protocols. Consequently, for many users, Error Line 37 is not a result of their own mistake, but rather a sign that the software itself has become outdated and incompatible with current Apple server requirements.