lrovi

Q: iTunes-iPhone not backing up

Mac's external iTunes backup disk crashed - pointed iTunes to new external disk but now getting message "iTunes could not back up the iPhone because the backup was corrupt or not compatible with the iPhone.

System shows no previous backups - any recommendations for getting iTunes-iPhone synch working again?

Posted on Mar 26, 2016 8:30 PM

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Q: iTunes-iPhone not backing up

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  • Helpful answers

  • by Linc Davis,

    Linc Davis Linc Davis Mar 27, 2016 7:50 AM in response to lrovi
    Level 10 (207,926 points)
    Applications
    Mar 27, 2016 7:50 AM in response to lrovi

    The old backups may be corrupt. I suggest you move them aside and start over. When you're sure you'll no longer need the old backups, delete them.

  • by lrovi,

    lrovi lrovi Mar 27, 2016 1:07 PM in response to Linc Davis
    Level 1 (4 points)
    iTunes
    Mar 27, 2016 1:07 PM in response to Linc Davis

    Thanks for the response - tried that w/o success - there are no previous backups  to delete per iTunes-Preferences-DeviceTab; even tried starting over by deleting all locks as suggested via Reset the Lockdown folder in iTunes - Apple Support .

  • by lrovi,

    lrovi lrovi Mar 27, 2016 1:25 PM in response to lrovi
    Level 1 (4 points)
    iTunes
    Mar 27, 2016 1:25 PM in response to lrovi

    A new error is being received now - "The iPhone cannot be synced. An unknown error occurred (-50)."  (Hmmm, wonder if this new error message is due to an Apple-Xcode upgrade?)

  • by Linc Davis,

    Linc Davis Linc Davis Mar 27, 2016 1:32 PM in response to lrovi
    Level 10 (207,926 points)
    Applications
    Mar 27, 2016 1:32 PM in response to lrovi

    Please launch the Console application in any one of the following ways:

    ☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)

    ☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.

    ☞ Open LaunchPad and start typing the name.

    The title of the Console window should be All Messages. If it isn't, select

              SYSTEM LOG QUERIES ▹ All Messages

    from the log list on the left. If you don't see that list, select

              View ▹ Show Log List

    from the menu bar at the top of the screen.

    Click the Clear Display icon in the toolbar. Then take an action that isn't working the way you expect. Select any lines that appear in the Console window. Copy them to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.

    The log contains a vast amount of information, almost all of which is irrelevant to solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.

    Please don't indiscriminately dump thousands of lines from the log into this discussion.

    Please don't post screenshots of log messages—post the text.

    Some private information, such as your name or email address, may appear in the log. Anonymize before posting.

    When you post the log extract, you might see an error message on the web page: "You have included content in your post that is not permitted," or "The message contains invalid characters." That's a bug in the forum software. Please post the text on Pastebin, then post a link here to the page you created.

    If you have an account on Pastebin, please don't select Private from the Paste Exposure menu on the page, because then no one but you will be able to see it.

  • by lrovi,

    lrovi lrovi Mar 27, 2016 1:58 PM in response to Linc Davis
    Level 1 (4 points)
    iTunes
    Mar 27, 2016 1:58 PM in response to Linc Davis

    3/27/16 15:51:53.126 DesktopTools[506]: [-1]: pre-value < 0

    3/27/16 15:51:55.518 DesktopTools[506]: [-1]: pre-value < 0

    3/27/16 15:51:55.708 iTunes[2751]: Entered:_AMMuxedVersion2DeviceConnected, mux-device:5

    3/27/16 15:51:55.712 iTunes[2751]: tid:14903 - unable to query device capabilities

    3/27/16 15:51:56.516 PTPCamera[2758]: --> HandleMessageFromICDD

    3/27/16 15:52:02.628 AppleMobileBackup[2761]: WARNING: Backing up f7a39ce8cb935dc00fcc78c490eb28d823397354

    3/27/16 15:52:05.543 DesktopTools[506]: [-1]: pre-value < 0

    3/27/16 15:52:15.469 AppleMobileBackup[2761]: ERROR: Backup message response: 205 Error creating backup directory (MBErrorDomain/205). Underlying error: No such file or directory (2) at path "f7a39ce8cb935dc00fcc78c490eb28d823397354" (MBErrorDomain/4).

    3/27/16 15:52:15.470 AppleMobileBackup[2761]: ERROR: Backup error: -20

    3/27/16 15:52:15.569 DesktopTools[506]: [-1]: pre-value < 0

    3/27/16 15:52:16.129 com.apple.usbmuxd[91]: MuxTCPInputSCE received RST for 0x5-f7a39ce8cb935dc00fcc78c490eb28d823397354@0xfd134000:50791->0x7ffa60f03b20-M DCrashReportTool/NULL:29185: sendMuxSegment connection was closed

    3/27/16 15:52:16.208 MDCrashReportTool[2762]: 2762:1679360|CrashReportCopierAFC.m:-[CrashReportCopierAFC copyAndProcessRemotePath:usingConnection:]| ERROR: Could not remove remote path at ./WiFi/WiFiManager/wifi-01-21-2016__10:16:55.log

    3/27/16 15:52:16.231 MDCrashReportTool[2762]: 2762:1679360|CrashReportCopierAFC.m:-[CrashReportCopierAFC copyAndProcessRemotePath:usingConnection:]| ERROR: Could not remove remote path at ./WiFi/WiFiManager/wifi-02-12-2016__11:21:42.log

    3/27/16 15:52:16.255 MDCrashReportTool[2762]: 2762:1679360|CrashReportCopierAFC.m:-[CrashReportCopierAFC copyAndProcessRemotePath:usingConnection:]| ERROR: Could not remove remote path at ./WiFi/WiFiManager/wifi-09-22-2015__19:13:33.log

    3/27/16 15:52:16.281 MDCrashReportTool[2762]: 2762:1679360|CrashReportCopierAFC.m:-[CrashReportCopierAFC copyAndProcessRemotePath:usingConnection:]| ERROR: Could not remove remote path at ./WiFi/WiFiManager/wifi-10-07-2015__15:17:01.log

    3/27/16 15:52:16.306 MDCrashReportTool[2762]: 2762:1679360|CrashReportCopierAFC.m:-[CrashReportCopierAFC copyAndProcessRemotePath:usingConnection:]| ERROR: Could not remove remote path at ./WiFi/WiFiManager/wifi-10-15-2015__11:01:55.log

    3/27/16 15:52:16.334 MDCrashReportTool[2762]: 2762:1679360|CrashReportCopierAFC.m:-[CrashReportCopierAFC copyAndProcessRemotePath:usingConnection:]| ERROR: Could not remove remote path at ./WiFi/WiFiManager/wifi-10-31-2015__11:46:45.log

    3/27/16 15:52:16.362 MDCrashReportTool[2762]: 2762:1679360|CrashReportCopierAFC.m:-[CrashReportCopierAFC copyAndProcessRemotePath:usingConnection:]| ERROR: Could not remove remote path at ./WiFi/WiFiManager/wifi-12-13-2015__13:58:40.log

    3/27/16 15:52:18.147 AppleMobileSync[2764]: [0x7fc2b250bf80] |ISyncManager|Warning| Could not retrieve ISyncClient with id com.apple.Keychain!

    3/27/16 15:52:18.655 AddressBookSync[2765]: *** -[NSRecursiveLock unlock]: lock (<NSRecursiveLock: 0x7fe8e383b570> '/private/var/folders/zy/n_76vbfs69n8d9h78qmfm63h0000gp/T/.AddressBookLocks/_Us ers_Lou_Library_Application Support_AddressBook_Metadata_.MetaData.lock_lock') unlocked when not locked

    3/27/16 15:52:18.655 AddressBookSync[2765]: *** Break on _NSLockError() to debug.

    3/27/16 15:52:25.000 DesktopTools[506]: [-1]: pre-value < 0

    3/27/16 15:52:35.025 DesktopTools[506]: [-1]: pre-value < 0

  • by Linc Davis,

    Linc Davis Linc Davis Mar 27, 2016 2:15 PM in response to lrovi
    Level 10 (207,926 points)
    Applications
    Mar 27, 2016 2:15 PM in response to lrovi

    Please read this whole message before doing anything.

    This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.

    The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of the file system or of certain system caches.

    Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem.

    Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.

    Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.

    The login screen appears even if you usually login automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.

    Test while in safe mode. Same problem?

    After testing, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.