Apple updates its security certificates or App Store login APIs, breaking the handshake mechanism Cydia Impactor uses.

The message http.hpp:37: _assert(code == 200) is an HTTP error code assertion. In web terms, a code means the server successfully processed the request. When Cydia Impactor displays this error, it means the app was expecting a successful "200" response from Apple’s servers when trying to sign your .ipa file, but it received something else instead (usually a 400, 403, or 500-level error). Common Causes:

Only works on specific iOS versions due to reliance on hardware/software exploits. To help find the best path forward, tell me: What iOS version is your device currently running?

Requires a wired or Wi-Fi local network connection to your computer to sign apps.

If you still wish to attempt using Cydia Impactor, keep these best practices in mind:

In programming, an "assertion" is a sanity check. The software checks if a specific, mandatory condition is met before it proceeds. If the condition is false, the program halts immediately to prevent further errors or crashes.

This is the most common cause. If your Apple ID has 2FA enabled (which most do by default now), Cydia Impactor struggles to generate an "app-specific password" automatically. While Impactor has a pop-up window for 2FA codes, the handshake often breaks, resulting in a generic assert failure with a 200 code.

Conflict between existing certificates on your device and the new one you are trying to generate. Step-by-Step Solutions to Fix the Error

Modern Apple IDs require an app-specific password to bypass 2FA when using third-party tools. Log in to appleid.apple.com. Navigate to or Sign-In and Security . Select App-Specific Passwords and click Generate .

If an update is available, download and install it immediately. 2. Generate an App-Specific Password

As noted by community discussions, Cydia Impactor has essentially been defunct for several years. If you are experiencing _assert(code == 200) repeatedly, it is because Apple has changed its backend authentication methods in a way that the retired Cydia Impactor tool cannot handle. Top Alternatives to Cydia Impactor

Enter a label (e.g., "Impactor") and copy the generated 16-character code.

While Cydia Impactor was once the gold standard for jailbreaking tools like