Before diving into fixes, it is critical to identify why this happens. The root causes usually fall into one of three categories:
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
Free Apple ID sideloading has limits (3 apps, 7-day expiry). For persistent errors: Before diving into fixes, it is critical to
In layman’s terms: The door opened (200 OK), but the room was empty. The server said "hello," but didn't give Impactor the certificate keys it needed. Before diving into fixes