After installing the iOS 10 Beta on my iPhone 5, I am unable to activate the device. This device is locked to AT&T. I have tried activating with the SIM that was originally in it and an older AT&T SIM that I cut to fit. Unfortunately the device is not recognized by Windows or macOS. I have tried a combination of Windows 10, Windows 7, Windows 8.1, and macOS devices with different cables and USB ports but none of them will do more than charge the iPhone. Entering DFU mode causes Windows to at least see the device, but it doesn't recognize it and I cannot install drivers for it. At this point the iPhone is just waiting for activation, but fails at every attempt. I wish I could help test the beta but with it being stuck like this, I am unable to. Does anyone have any suggestions?
Unable To Activate
Same problem here. I'm installing xcode 8 beta ( Important: You must have the latest beta version of Xcode 8 installed on your Mac before using a Restore Image to install iOS or tvOS beta software on a device) and then trying again... not sure if it makes a difference
Let me know how it goes so I can hopefully fix mine as well. I don't have the device on me at the moment so I can't test it myself.
I did not make a difference (xcode would not recognize the device) so I had to revert back to an iOS9 restore image through the restore mode https://support.apple.com/en-us/HT201263
Eventually I have managed to install ios10 beta on an iPhone 6 Plus (the install on an iPhone 6 failed) by using iTunes (instructions here : https://developer.apple.com/support/beta-software/install-ios-beta/
Make sure that you have a backup of your previous image locally so that you can restore through https://support.apple.com/en-us/H…