The community has largely migrated to palera1n for modern needs. Since palera1n uses the same underlying exploit but with active development and broader iOS version support, it's now the recommended choice for most users with A5-A11 devices.
The developers note that "checkra1n has stopped updating, has limited support for iOS 15+, and palera1n is a better choice". Checkra1n Ipa
Download the official jailbreak IPA (e.g., Unc0ver) from its legitimate official source. The community has largely migrated to palera1n for
However, Why a Checkra1n IPA is Physically Impossible has limited support for iOS 15+
Any website offering a standalone "Checkra1n.ipa" for download is likely: