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Your computer firewall or antivirus is blocking the app. Step-by-Step Fixes for Error Line 37
Because line 37 often references a zip.cpp code failure, the issue might lie entirely within the application file you are trying to sideload. Delete the current IPA file from your computer. Download the file again from a trusted, verified source.
If you are determined to use Cydia Impactor, try these steps in order: cydia impactor error line 37
Redownload the file from a trusted, verified repository or source.
Requires you to refresh apps every 7 days; limited to 3 active sideloaded apps at a time.
: Apple frequently updates its server-side security protocols. The original Cydia Impactor (v0.9.52) was abandoned by its developer, Jay Freeman (Saurik), and is no longer updated. Modern Apple servers often reject its old SSL certificates, triggering the line 37 error. This public link is valid for 7 days
Cydia Impactor has not seen a major update in several years and is considered "dead" or obsolete by the jailbreak community for most modern sideloading tasks. Potential Fixes and Workarounds
You cannot use your normal Apple ID password if you have two-factor authentication turned on. You must make a special password just for Cydia Impactor. Go to the official . Log in with your username and password. Go to the Sign-In and Security section. Click on App-Specific Passwords . Click Generate an app-specific password . Give it a name like "Impactor". Copy the long code that Apple gives you. Use this new code as your password in Cydia Impactor. 3. Check Your Internet and Firewall
Complete Guide to Fixing Cydia Impactor Error Line 37 (2026 Updated) Can’t copy the link right now
If your Apple ID has 2FA enabled (which is strongly recommended for security), you use an App-Specific Password instead of your regular password.
Work through the following solutions in order to resolve the issue and successfully sideload your IPA files. Solution 1: Update Cydia Impactor to the Latest Version
Modify the string value slightly (e.g., change com.developer.app to com.developer.app2 ).
Sometimes, a buildup of old, conflicting signing certificates on your Apple ID causes the installer script to crash at line 37. Open on your computer. Connect your iOS device via USB. Click on the Xcode menu at the top of the window. Select Revoke Certificates from the dropdown menu.
Use this unique code as your password inside Cydia Impactor. 2. Update Cydia Impactor