An app called "reprovision" can do the same on an iOS device, without requiring a copy of altserver running. I haven't used it since 2021 when I used it for sig

An app called "reprovision" can do the same on an iOS device, without requiring a copy of altserver running. I haven't used it since 2021 when I used it for signing a jailbreak app, and development has stalled since then, but it worked for me.