Sometimes a "ghost" certificate is blocking the new installation. Open Cydia Impactor. Go to the menu. Select Revoke Certificates . Enter your Apple ID credentials. 2. Use an App-Specific Password
It is important to note that Cydia Impactor currently requires a ($99/year) to function correctly for most users. If you are using a free "personal" Apple ID, you are significantly more likely to encounter Assert 200 or "Line 159" errors because Apple changed how free accounts authenticate. Modern Alternatives to Cydia Impactor assert code 200 cydia impactor
At its core, Assert Code 200 is a communication breakdown. It usually means Cydia Impactor tried to talk to Apple’s servers and received an unexpected response or "null" data. Apple often updates its backend security. Sometimes a "ghost" certificate is blocking the new
Ensure you aren't using an ancient build. Visit the official cydiaimpactor.com site to download the latest available version for Windows, Mac, or Linux. Why It Might Still Fail Select Revoke Certificates
The gold standard for sideloading. It uses a companion app on your computer (AltServer) to "refresh" apps over Wi-Fi so they never expire.
If you are determined to use Cydia Impactor, try these steps to clear the communication lines. 1. Revoke Existing Certificates
A newer mobile-focused option that allows for sideloading without a constant PC connection.