Try installing your IPA file again.
In programming terms, "Line 37" refers to a specific line in the source code where the script fails. For the end user, it generally translates to one of three things: cydia impactor error line 37
Apple treats this password as a "pre-verified" token. It bypasses the 2FA check that causes line 37. This fixes the error for virtually every user. Try installing your IPA file again
Now that you know the common causes, here is a step-by-step strategy to diagnose and fix the problem. Follow these solutions in order. It bypasses the 2FA check that causes line 37
Sometimes a stalled or conflicting certificate on your Apple ID prevents Cydia Impactor from signing the app. Open on your computer. Connect your iOS device via USB. Click on the Xcode menu at the top of the interface. Select Revoke Certificates from the dropdown menu.
The app‑specific password bypasses the 2FA challenge, allowing Cydia Impactor to authenticate successfully and receive the expected 200 OK response from Apple’s servers.