Recently, we found our internal testers and external testers can’t update our new prerelease app.
We are using developer provisioning file to sign binary code. The prerelease app can be verified by itunesconnect. It can be submitted to app store successfully. Than our testers tried to use TestFlight to update the app. They pressed Update button beside the app icon in the TestFlight. The TestFlight never finish its job. The progress circle wouldn’t complete.
TestFlight Version: 1.0.2(55),
XCode Version: 6.3 (6D570),
iOS Version: 8.1(12B411) & 8.2(12D508) & 8.3(12F70)
We have tried 3G network and WiFi network. We have tried all different Apple ID in TestFlight.