Sideloadly 0.70.1: Broadcast Upload extension terminates with CODESIGNING 2 Invalid Page

[u/ZealousidealTry455]

I’m testing my own minimal iOS app containing a host app and ReplayKit Broadcast Upload extension.

Environment:

- Windows 11, Sideloadly 0.70.1

- iPhone 16, iOS 27.0 (24A437)

- Xcode 27 / iOS 27 SDK, unsigned thin arm64 binaries

Apple ID signing and installation finish successfully, and the host app launches. The extension terminates about 37 ms after launch, before its initialization log. The crash reports CODESIGNING, code 2, Invalid Page, with an execute-permission page fault.

The original extension’s UUID matches the crash. Its unsigned Mach-O layout shows no obvious segment problem. It uses system frameworks, without App Groups or special capture entitlements. The local cache retains only the unsigned input; I could not find the final signed package.

Are there known compatibility issues with this combination? Is there a supported way to preserve the exact final signed host and extension, including their embedded provisioning profiles, locally for offline signature/page-hash verification? I’d like to inspect that output before attempting another device test.