问题:

A customer sent me a crash log from an iOS 5.0.1 (9A405) device. I'm running Xcode 4.2 on Snow Leopard. The system parts of the crash log call stack fail to symbolicate, and it seems that they're relevant to the crash; there are no iOS 5.0.1 symbols in Xcode. I don't have a 5.0.1 device, and I don't think I can install it, now that 5.1 is the latest.

Is there a way for force-download symbols for a given iOS version in Xcode without plugging in a device?

EDIT: seems like you can force a specific iOS version to a device using Xcode's organizer and a restore software image. However, the Dev Portal only offers 5.1 restore images for download. Are older ones available anywhere?

回答1:

There are links to the 5.0.1 firmware are as follows:

iPhone 4S here
iPhone 4 (GSM) here
iPhone 4 (CDMA) here
iPhone 3GS here
iPad 2 WiFi here
iPad 2 GSM here
iPad 2 CDMA here
iPad here
iPod touch 3G here
iPod touch 4G here

Could you use those at all?

回答2:

Sorry, but if you haven't saved your SHSH blobs you can't restore an older version of iOS.. I recommend you to save your blobs with TinyUmbrella from now, so this doesn't happen again.