Workaround has been identified - currently in iOS version 26.5 or earlier, app bundle id cannot have a prefix > 10 characters for downloads to succeed.

Hi, thanks for the reply, I have an outstanding forum post and submitted a feedback report related to the issues I’ve been having but not had any feedback for over a month - (https://developer.apple.com/forums/thread/824586). It’s blocking my development at the moment so I just really need to know if I’ve not configured something correctly or there is an actual iOS bug. Feedback ID is 22599462. I‘ve seen a few posts where some developers seem to have had success with getting downloads to work in TestFlight so any help would be appreciated.

I've not been able to even get apple hosted asset packs working on iOS 26.5 even in testflight after following instructions, if you have been able to get this to work I would be hugely appreciative if you could describe how you did it or share a basic test project that can download apple hosted assets. I'm able to publish and download assets but after download the files in the aar dont exist in the namespace, feels like an iOS bug but if someone has this working would be very helpful to know.

Hi - did you ever get this to work? If so would be extremely grateful if you could let me know how you did it, I can get the download to work but never access the files. Thanks.