Like jaime198, I get the same error message on the iPhone 6 yet I can use the same cable and port on the iPad and mini without any problem. Also, I cannot backup on the iMac using the wifi on the iPhone but it works with the iPads. I was finally able to back the iPhone from the phone only today. However, I want to do a full backup before I buy a new phone.
Console: iCloud Backup
9/14/15 10:39:17.609 PM com.apple.xpc.launchd[1]: (com.apple.imfoundation.IMRemoteURLConnectionAgent) The _DirtyJetsamMemoryLimit key is not available on this platform.
9/14/15 10:39:18.799 PM AppleMobileBackup[686]: 686:46690304|SocketStreamHandler.c:_SocketLogCallback| ERROR: SocketRecv (data): return of 0 bytes 9/14/15 10:39:18.799 PM AppleMobileBackup[686]: 686:46690304|StreamHandler.c:_ReadFunc| ERROR: Error reading data: Can't read data
9/14/15 10:39:18.800 PM AppleMobileBackup[686]: 686:46690304|DeviceLinkConnection.c:_DLHandlerThreadReadMessage| ERROR: Could not receive message: '(null)'
9/14/15 10:39:18.800 PM AppleMobileBackup[686]: 686:1931469568|DeviceLinkConnection.c:_DLMainThreadMessagePortCallback| ERROR: Error creating components from read data: 'NULL data returned from read'
9/14/15 10:39:18.800 PM AppleMobileBackup[686]: ERROR: Connection to device lost (MBErrorDomain/200)
9/14/15 10:39:18.800 PM AppleMobileBackup[686]: ERROR: Backup error: -10 9/14/15 10:39:18.800 PM AppleMobileBackup[686]: 686:46690304|SocketStreamHandler.c:_SocketLogCallback| ERROR: SocketSend (data): error 32: Broken pipe
9/14/15 10:39:18.800 PM AppleMobileBackup[686]: 686:46690304|StreamHandler.c:_WriteFunc| ERROR: Error sending data: Can't send data
9/14/15 10:39:18.800 PM AppleMobileBackup[686]: 686:46690304|DeviceLinkConnection.c:_DLHandlerThreadMessagePortCallback| ERROR: Could not send disconnect message: 'Error writing length of data'
9/14/15 10:39:20.570 PM com.apple.xpc.launchd[1]: (com.apple.imfoundation.IMRemoteURLConnectionAgent) The _DirtyJetsamMemoryLimit key is not available on this platform.
Console: iMac Backup
9/14/15 10:52:09.565 PM AppleMobileBackup[727]: WARNING: Backing up 7ff4539c518d6c484f0d437abb91935486625ebc
9/14/15 10:52:14.852 PM AppleMobileBackup[727]: INFO: Device detached 0x100514430/711721521f6c1930944585f5fdedb9e1e03a24b2
9/14/15 10:52:14.852 PM iTunes[500]: Entered:_AMMuxedDeviceDisconnected, mux-device:107 9/14/15 10:52:14.853 PM iTunes[500]: Entered:__thr_AMMuxedDeviceDisconnected, mux-device:107
9/14/15 10:52:14.853 PM iTunes[500]: tid:f71b - Mux ID not found in mapping dictionary
9/14/15 10:52:14.853 PM iTunes[500]: tid:f71b - Can't handle disconnect with invalid ecid
9/14/15 10:53:28.865 PM AppleMobileBackup[727]: 727:81268736|SocketStreamHandler.c:_SocketLogCallback| ERROR: SocketRecv (data): return of 0 bytes 9/14/15 10:53:28.865 PM AppleMobileBackup[727]: 727:81268736|StreamHandler.c:_ReadFunc| ERROR: Error reading data: Can't read data
9/14/15 10:53:28.865 PM AppleMobileBackup[727]: 727:81268736|DeviceLinkConnection.c:_DLHandlerThreadReadMessage| ERROR: Could not receive message: '(null)'
9/14/15 10:53:28.866 PM AppleMobileBackup[727]: 727:1931469568|DeviceLinkConnection.c:_DLMainThreadMessagePortCallback| ERROR: Error creating components from read data: 'NULL data returned from read'
9/14/15 10:53:28.866 PM AppleMobileBackup[727]: ERROR: Connection to device lost (MBErrorDomain/200)
9/14/15 10:53:28.866 PM AppleMobileBackup[727]: ERROR: Backup error: -10
9/14/15 10:53:28.866 PM AppleMobileBackup[727]: 727:81268736|SocketStreamHandler.c:_SocketLogCallback| ERROR: SocketSend (data): error 32: Broken pipe 9/14/15 10:53:28.866 PM AppleMobileBackup[727]: 727:81268736|StreamHandler.c:_WriteFunc| ERROR: Error sending data: Can't send data
9/14/15 10:53:28.866 PM AppleMobileBackup[727]: 727:81268736|DeviceLinkConnection.c:_DLHandlerThreadMessagePortCallback| ERROR: Could not send disconnect message: 'Error writing length of data'
I am going to see if I can back up the iPhone on the MacPro.
Thank you for any assistance.
Xena