Since March these libraries, along with others, have all been [unable to use Apple iOS app store authentication blocking any downloads. This is a usual cat and mouse game of Apple fixing/patching/changing and various third parties trying to keep up. For some reason this time was different and Apple went back on their changes after 3 months.
June 2025 update: Aaand their back! Without any fixes from the public, all the existing tools are working again. This is much different and seems to indicate that Apple either walked back their changes.
Notably, this happened after the recent antitrust measures, so I discussed that a bit in the blog.
There are two main libraries, among others ipatool https://github.com/majd/ipatool/ and ipswm https://github.com/blacktop/ipsw/, that are used to download the IPA files. (https://github.com/majd/ipatool/issues/357).
June 2025 update: Aaand their back! Without any fixes from the public, all the existing tools are working again. This is much different and seems to indicate that Apple either walked back their changes.
Notably, this happened after the recent antitrust measures, so I discussed that a bit in the blog.