iphone11白苹果后用itunes更新失败

1、由于数据没备份，有没什么方法可以找回数据进行备份

2、看了日志，有可能存储空间不足导致系统更新失败，有没有办法解决

错误代码

unable to set attributes on directory for update events: Error Domain=NSCocoaErrorDomain Code=640 "(null)" UserInfo={NSFilePath=/mnt4/db/UpdateMetrics/Events, NSUnderlyingError=0x155d36100 {Error Domain=NSPOSIXErrorDomain Code=28 "No space left on device"}}

[13:55:00.3369] : unable to set attributes on directory for update events: Error Domain=NSCocoaErrorDomain Code=640 "(null)" UserInfo={NSFilePath=/mnt2/db/UpdateMetrics/Events, NSUnderlyingError=0x155d39040 {Error Domain=NSPOSIXErrorDomain Code=28 "No space left on device"}}

[13:55:00.3369] : -[UMEventRecorder submitEventsInBackground:withOptions:]_block_invoke: Previously submitted events will NOT BE resubmitted

[13:55:00.3369] UMEventShimSubmitEvents done

[13:55:00.3369] error unmounting '/mnt4': No space left on device

[13:55:00.3369] ramrod_dump_mounted_filesystem_info:**********DUMPING MOUNTED FILESYSTEMS********

[13:55:00.3369] ramrod_dump_mounted_filesystem_info: 7 filesystems are mounted

[13:55:00.3369] /dev/disk0s1s5 is mounted at /mnt4

[13:55:00.3369] /dev/disk0s1s2 is mounted at /mnt2

[13:55:00.3369] /dev/disk0s1s3 is mounted at /mnt7

[13:55:00.3369] /dev/disk0s1s1 is mounted at /mnt1

[13:55:00.3369] tmpfs is mounted at /mnt5

[13:55:00.3369] devfs is mounted at /dev

[13:55:00.3369] /dev/md0 is mounted at /

[13:55:00.3369] ramrod_dump_mounted_filesystem_info: *********DONE DUMPING MOUNTED FILESYSTEMS********

[13:55:00.3369] [submit_update_stats]: failed to unmount update partition. 28: No space left on device

[13:55:00.3369] [05:54:55.0456-GMT]{3>7} CHECKPOINT END: RESTORED:[0x061B] submit_update_stats

[13:55:00.3369] ==== end of device restore output ====

[13:55:00.3650] AMRAuthInstallDeletePersonalizedBundle

[13:55:00.3754] <Restore Device 0x600003558a50>: Restore failed (result = 28)

[13:55:00.3755] Can't send dump_console command since device is not in recovery mode

[13:55:00.3758] AMRestorePerformRestoreModeRestoreWithError failed with error: 28

[13:55:00.3759] Finished RestoreOS Restore Phase: Failed

[13:55:00.3760] State Machine Dump, status:ERROR - [state:Recovery remaining-cycles:0] -> [state:RestoreOS remaining-cycles:0 (current state)]

[13:55:00.3764] Changing state from 'Restoring' to 'Error'

[13:55:00.3764] State is now set to error: AMRestorePerformRestoreModeRestoreWithError failed with error: 28

[13:55:00.3770] Restore completed, status:28

[13:55:00.3770] Restore Checkpoint Fingerprint: 061D.001C

[13:55:00.3770] Failure Description:

[13:55:00.3770] Depth:0 Code:-1 Error:AMRestorePerformRestoreModeRestoreWithError failed with error: 28

[13:55:00.3770] Depth:1 Code:28 Error:Failed to handle message type StatusMsg (Timeout waiting for NAND)

[13:55:00.3770] Depth:2 Code:28 Error:failed to unmount filesystems