Because Cydia Impactor does not natively support modern Apple accounts without a paid developer enrollment, it is highly recommended to switch to active alternatives like Sideloadly or AltStore. 💬 For a Forum or Reddit Post
The era of Cydia Impactor as a reliable tool is ending, but the jailbreak community has evolved. Error Line 37 is simply Apple’s way of telling you it’s time to upgrade your sideloading process.
That’s it. Line 37 is not a complex bug — it’s a brittle assumption that Apple’s servers would always cooperate.
Cydia Impactor was built for the iOS 9–11 era, when Apple’s free developer program was permissive. Today, Apple’s security and provisioning logic have evolved, and Impactor hasn’t seen a meaningful update since 2019. Line 37 is where that collision becomes visible.
Since Cydia Impactor is essentially "dead" for free accounts, you should switch to a modern, actively maintained alternative: Sideloadly