The process of copying shared cache symbols from my Apple Watch has been horrendous. I cannot even get past 2% complete before this process fails. Every device is on the same network. I have trusted my machine. Developer mode is enabled on the watch. I have successfully paired the phone and watch. I managed to install an Watch app onto the watch. But the shared cache symbols were never copied from the watch. I gathered several commands at the terminal to help me. rm -rf ~/Library/Developer/Xcode/DerivedData rm -rf ~/Library/Developer/CoreDevice sudo killall -9 remoted CoreDeviceService 2>/dev/null || true xcrun devicectl manage ddis update xcrun devicectl list devices Clear CoreDevice state. With Xcode quit: rm -rf ~/Library/Developer/Xcode/DerivedData rm -rf ~/Library/Caches/com.apple.dt.Xcode Reset Xcode's Local Network permission. tccutil reset Local-Network com.apple.dt.Xcode tccutil reset Bluetooth com.apple.dt.Xcode xcrun devicectl device info hardware --device MY_DEVICE_ID xcrun devicectl list devices ping -c 3 MY_IP_ADDRESS Confirm no VPN/proxy/filter is lurking scutil --nwi ifconfig | grep -E "utun|ipsec|tap|tun" xcrun devicectl device info details --device MY_DEVICE_ID xcrun devicectl manage pair --device MY_DEVICE_ID I keep obtain this type of error: Unable to copy shared cache files Domain: com.apple.dt.deviceprep Code: -33 User Info: { DVTErrorCreationDateKey = "2026-05-20 23:41:00 +0000"; NSLocalizedRecoverySuggestion = ""; "com.apple.dt.DVTCoreDevice.operationName" = dtfetchsymbols; } -- The operation couldn’t be completed. No route to host Domain: NSPOSIXErrorDomain Code: 65 Failure Reason: No route to host -- System Information macOS Version 26.5 (Build 25F71) Xcode 26.5 (24943) (Build 17F42) Timestamp: 2026-05-20T16:41:00-07:00 Does anyone have ideas to help me overcome this nightmare?

Hi... Is there not an available Developer Disk Image for this situation? I am unable to do my professional job because I have not been able to overcome this issue on my machine. I have various things to try to resolve this issue so that I can install, run, and test apps onto my iPhone (iPhone 13). The version of MacOSX is Sequoia 15.7.3. I've tried everything from hard resetting the pairing stack, to resetting the trust on my iPhone. I've even sought help from AI. AI says, in a nutshell I'm screwed. Apparently, I am unable to downgrade from iOS 26.2 to, say, iOS 18 or below. I'll be honest: this is frustrating, and this situation seems to happen like clockwork with every update in either direction. I hope someone somewhere has ideas. Thanks. Update: I'm not even reaching the step where the shared Cache symbols are being copied from my iPhone. The developer disk image could not be mounted on this device. Domain: com.apple.dt.CoreDeviceError Code: 12040 Failure Reason: Failed to find a DDI that can be used to enable DDI services on the device. Usually this means the best DDI we could find for a platform did not have compatible CoreDevice content. Run 'devicectl list preferredDDI' from the command line to get more details on why no valid DDI can be found. User Info: { DVTErrorCreationDateKey = "2026-01-14 18:56:43 +0000"; DeviceIdentifier = "C471EDF8-4385-5669-BA17-976B325B2EC4"; "com.apple.dt.DVTCoreDevice.operationName" = enablePersonalizedDDI; } -- Failed to find a DDI that can be used to enable DDI services on the device. Usually this means the best DDI we could find for a platform did not have compatible CoreDevice content. Run 'devicectl list preferredDDI' from the command line to get more details on why no valid DDI can be found. Domain: com.apple.dt.CoreDeviceError Code: 12001 -- System Information macOS Version 15.7.3 (Build 24G419) Xcode 26.2 (24553) (Build 17C52) Timestamp: 2026-01-14T10:56:43-08:00 COMMAND LINE Developer % devicectl list preferredDDI Host CoreDevice version: 506.6 WARNING: No usable DDI found for the iOS platform (The DDI's CoreDevice content is too old.). Best (unusable) DDI found is: • hostDDI: file:///Library/Developer/DeveloperDiskImages/iOS_DDI/ ▿ ddiMetadata: • buildUpdate: 17C5038g • contentIsCompatible: false • coreDeviceVersionChecksIncludeDevelopmentRevision: true • developmentRevision: 0 • enforcingCoreDeviceVersionChecks: true • platform: iOS ▿ projectMetadata: • Citrine-1500.1 • CoreDevice-506.5 • DTDeveloperDiskImageSupport-14.0.0 • DTOCMock-23002 • GPUToolsDevice_DDI-312.4 • JetsamProperties-2648.0.21 • LiveExecutionResultsLogger-20100 • Mercury-67 • Playgrounds-11 • XCTest-24507 • incompatibleContentReason: The DDI's CoreDevice content is too old. • isUsable: false • variant: external WARNING: No DDI was found for the macOS platform. No usable DDI found for the tvOS platform (The DDI's CoreDevice content is too old.). Best (unusable) DDI found is: • hostDDI: file:///Library/Developer/DeveloperDiskImages/tvOS_DDI/ ▿ ddiMetadata: • buildUpdate: 17C5038g • contentIsCompatible: false • coreDeviceVersionChecksIncludeDevelopmentRevision: true • developmentRevision: 0 • enforcingCoreDeviceVersionChecks: true • platform: tvOS ▿ projectMetadata: • Citrine-1500.1 • CoreDevice-506.5 • DTDeveloperDiskImageSupport-14.0.0 • DTOCMock-23002 • GPUToolsDevice_DDI-312.4 • JetsamProperties-2648.0.21 • LiveExecutionResultsLogger-20100 • Mercury-67 • Playgrounds-11 • XCTest-24507 • incompatibleContentReason: The DDI's CoreDevice content is too old. • isUsable: false • variant: external WARNING: No usable DDI found for the watchOS platform (The DDI's CoreDevice content is too old.). Best (unusable) DDI found is: • hostDDI: file:///Library/Developer/DeveloperDiskImages/watchOS_DDI/ ▿ ddiMetadata: • buildUpdate: 17C5038g • contentIsCompatible: false • coreDeviceVersionChecksIncludeDevelopmentRevision: true • developmentRevision: 0 • enforcingCoreDeviceVersionChecks: true • platform: watchOS ▿ projectMetadata: • Citrine-1500.1 • CoreDevice-506.5 • DTDeveloperDiskImageSupport-14.0.0 • DTOCMock-23002 • GPUToolsDevice_DDI-312.4 • JetsamProperties-2648.0.21 • LiveExecutionResultsLogger-20100 • Mercury-67 • Playgrounds-11 • XCTest-24507 • incompatibleContentReason: The DDI's CoreDevice content is too old. • isUsable: false • variant: external WARNING: No usable DDI found for the visionOS platform (The DDI's CoreDevice content is too old.). Best (unusable) DDI found is: • hostDDI: file:///Library/Developer/DeveloperDiskImages/xrOS_DDI/ ▿ ddiMetadata: • buildUpdate: 17C5038g • contentIsCompatible: false • coreDeviceVersionChecksIncludeDevelopmentRevision: true • developmentRevision: 0 • enforcingCoreDeviceVersionChecks: true • platform: xrOS ▿ projectMetadata: • Citrine-1500.1 • CoreDevice-506.5 • DTDeveloperDiskImageSupport-14.0.0 • DTOCMock-23002 • GPUToolsDevice_DDI-312.4 • JetsamProperties-2648.0.21 • LiveExecutionResultsLogger-20100 • Mercury-67 • Playgrounds-11 • XCTest-24507 • incompatibleContentReason: The DDI's CoreDevice content is too old. • isUsable: false • variant: external

I am trying to install an app from a XCode project onto a iOS 17.6.1 device. The Macbook is a MacOSX Sonoma 14.7, Apple M2 Pro. I'm running XCode 16.0. I receive a series of alerts before receiving the final message. I tried to delete everything in this folder: rm ~/Library/Caches/com.apple.dt.Xcode/Downloads/* I reviewed the XCode components currently installed: I downloaded more runtime simulators from this link. I then followed the instructions provided in this link. For example: xcrun simctl runtime add "~/Downloads/iOS_17.4_Simulator_Runtime.dmg" xcrun simctl runtime add "~/Downloads/iOS_17.5_Simulator_Runtime.dmg" I'm still getting a message beside the device I want to install my app: The Developer Disk Image Could Not Be Staged On The Host I need help. I don't know what else to do. I don't see any matching simulators available for 17.6.1 and 17.7. Does anyone have any ideas?

Hi... I have a situation. I recently upgraded my iOS device from 15.1.1 to 17.5.1. I see that my version of XCode can no longer install and launch iOS apps onto the iOS device. Perhaps there are those in the Apple Community who are able to provide insight into my situation. Professionally, I support older iOS applications. The Mac OSX on the machine where I do all the work is Ventura 13.6.4. That machine is running XCode 15.2. I see that my computer does not support XCode 15.3 and XCode 15.4. Will I be required to upgrade the version of Mac OSX from Ventura to Somona for XCode to be able to install mobile apps that I've built onto this iOS device that has v17.5.1?