When my device upgraded to iOS15 beta1, the installed Enterprise App cannot launch success.
ErrorMsg : Signature Version Unsupported, reason: Signature version no longer supported
Signature Version Unsupported, reason: Signature version no longer supported
I have the same issue with you. Hope some help. Many thanks so much!
I notice this change https://developer.apple.com/documentation/xcode/using-the-latest-code-signature-format
My app code sign version is CodeDirectory v=20400
I upgraded macOS to 11.3 and installed Xcode13 beta version, and resign the enterprise app, it seems to works.
Same symptom here. I resigned the app with Xcode 11.5.1, reinstalled it on the device and now it works fine.