In iOS 16.0, the problem that the troll store app cannot be used with other signatures was solved. According to the public information about the query, after the first appearance of iOS 16.0, the iOS developer released an update of the troll store permanent signature utility for iOS, which can be installed permanently. Ipa files (modified or unmodified) on supported firmware on iPhone or iPad. Permanent signature means that users can use these applications without having to re-sign them every seven days.