Apple’s Software Update FeedĪC 2 references directly for IPSW download URL data. To get usable IPSWs in the cache again you may need to go through the process on a different Mac. If you do a restore/revive, delete IPSWs in ~/Library/Group Containers/.configurator/Library/Caches/Firmware and then restore again, IPSWs most likely will not be downloaded again to the cache directory because the required files already exist in /private/var. Boot the problem Mac to DFU, drag/drop the IPSW onto the device in AC 2.Īs part of the restore process the IPSW is unpacked to a temporary directory like /System/Volumes/Data/private/var/folders/yf/5l1s2jzx1qlb1_bpszkjjk400000gp/T/.DeviceService/TemporaryItems/82BB4EE1-4BA6-4509-89E2-9DAFE1512A76/Firmware. That IPSW can be then be packaged or archived to be shared with others. If it is, no need to download a new IPSW, use the existing one. Everytime a new iDevice is restored, AC 2 check its cache to see if the latest, signed IPSW is already available at that location. Apple Configurator 2 CacheĪC 2 keeps a IPSW cache at ~/Library/Group Containers/.configurator/Library/Caches/Firmware. It used to be they’d keep multiple IPSWs signed - 14.1 and 14.2 on iOS for example - for a few weeks, but that’s rarely the case anymore. With a 11.1 IPSW on hand 11.2 can be avoided until the issue is fixed. If a Mac needs to be restored through AC 2 it will by default get 11.2 installed as that’s the latest supported release. Say 11.2 is released with a breaking change. And lastly, although this is becoming less common, older IPSWs can be used to restore a different OS version. It also doesn’t appear IPSW files are part of the content types supported by content caching, but if someone has information to the contrary please let me know. To have to download 13.6 GB on a regular basis across multiple technician Macs or other scenarios can be a problem depending on networking constraints. The main reason someone might want to use option 2 is the latest Big Sur 11.0.1 IPSW comes in at a whopping 13.6 GB.
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