安装较旧的iOS以进行设备测试 [英] Installing older iOS for device testing
问题描述
以前测试的iOS版本比目前出货的iOS版本更简单。我现在似乎无法找到一种方法，因为Apple在尝试恢复设备时会回家。如果该设备有资格使用更新的iOS，则iTunes和XCode 4.5会强制您升级iOS。
It used to be simpler to test versions of the iOS that were older than the currently shipping iOS. I can't seem to find a way to do it now that Apple calls home when trying to restore a device. If the device is eligible for a more recent iOS, iTunes and XCode 4.5 force you to upgrade the iOS.
在我的情况下，我有一个我想要的iPhone 4使用iOS 5.1.1进行测试。我有实际在此设备上使用的.ipsw文件。当我尝试从此.ipsw强制恢复时，iTunes会生成不符合条件的错误。 XCode 4.5也是。我的理解是Apple不再签署5.1.1并且我的设备有资格使用iOS 6，这是错误的原因。
In my case, I have an iPhone 4 that I want to test with iOS 5.1.1. I have the .ipsw file that actually was used on this device. iTunes generates an "not eligible" error when I try and force the restore from this .ipsw. XCode 4.5 does also. My understanding is that Apple is no longer signing 5.1.1 and my device is eligible for iOS 6, the reason for the error.
过去，我有足够的设备躺在我搁置的地方并用于测试。我现在没有那么奢侈。
In the past, I had enough devices laying around that I shelved and used for testing. I don't have that luxury now.
两个问题：
1.有没有办法在有资格获得新版本的设备上安装旧版iOS iOS版？
2.您如何测试较旧的iOS版本？
Two questions: 1. Is there any way to install an older iOS on device that is eligible for a newer iOS? 2. How are you testing on older iOS versions?
我欢迎建议
推荐答案
不，你不能安装旧的iOS，除非你被越狱并且你的SHSH blob与Cydia或TinyUmbrella一起存储。
No, you cannot install an older iOS unless you are jailbroken and your SHSH blobs were stored with Cydia or TinyUmbrella.
大多数人使用模拟器或旧设备。
Most people use the simulator, or older devices.
https： //developer.apple.com/downloads/index.action
可用于查找旧的xcodes和ios SDK。
can be used to find old xcodes and ios SDKs.
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