Temporarily disable your antivirus or Windows Defender firewall. Alternatively, add Cydia Impactor to your firewall's whitelist to ensure it has unrestricted internet access. Modern Alternatives to Cydia Impactor
Sometimes the error is caused by an SSL certificate verification failure, especially if you’re using an older version of Cydia Impactor or a Windows machine with outdated root certificates.
Free, updates apps automatically over local Wi-Fi, completely bypasses server handshake bugs. Requirements: A computer running AltServer and an Apple ID. Sideloadly
Marco smiled, just a little. Not every error needs a solution. Some just need to be remembered.
The error on "line 37" generally points to a runtime error or a path not found issue. cydia impactor error line 37
Enter your Apple ID and your app-specific password when prompted.
If you are reading this guide in 2026, take this as the definitive answer: Cydia Impactor has ridden into the sunset. Error line 37 is its ghost. Banish the ghost by using modern sideloading tools, and you will be back to jailbreaking in minutes.
: If you have Two-Factor Authentication (2FA) enabled, you cannot use your normal password. Go to apple.com to generate a unique password for the app.
If you’re on an older version, uninstall Cydia Impactor completely. Not every error needs a solution
Drag and drop your IPA file into the Sideloadly window, enter your Apple ID credentials, and click "Start."
Although Cydia Impactor is no longer actively developed, you should still ensure you’re using the most recent release, version 0.9.52 (or any later version that may appear). This version includes crucial fixes for macOS Catalina and later, as well as some SSL improvements.
Here is everything you need to know about why this is happening and how to get your apps running again. What is Error Line 37?
Cydia Impactor has long been a staple tool for iOS enthusiasts, jailbreakers, and developers. It provides a straightforward way to sideload IPA files onto iPhone and iPad devices using a computer. However, because the software relies heavily on communication with Apple's developer servers, changes to Apple's infrastructure frequently cause breaking errors. From the dropdown
Sometimes old, "stuck" certificates cause conflicts. In Cydia Impactor, go to Xcode > Revoke Certificates and enter your Apple ID. This clears the path for a fresh installation.
: Ensure your system's date and time are accurate, as SSL mismatches can trigger connection errors.
From the dropdown, select Insecure SSL .