In most cases, the content won't sync when the problem happens.
If the "i Tunes sync error 54" still can't be fixed after you have tried all the methods above, you can go on trying an i Tunes alternative program to back up and sync data on i Phone, i Pad or i Pod to your Windows or Mac computer.Here, we recommend you try Ease US Mobi Mover, which is completely free i Phone transfer software allowing you to transfer files from computer to i Phone/i Pad without i Tunes, back up or export all the i Phone data to the computer in one click, and sync content between two i OS devices directly.You can try to close the security software or change its setup to fix the issue.If the error 54 occurs with content from the i Tunes Store, you can try to fix it by removing and then re-download the content.If all of these basic fixes fail, you can still use Ease US Mobi Mover to back up all the content on the i Phone without i Tunes effortlessly.
Besides, Ease US Mobi Saver is available for you to recover any deleted content on your i OS devices.And you can try its free version before purchasing. Connect i Phone to PC and launch Ease US Mobi Saver.Select the phone in "Recover from i OS device" mode and click "Scan" button to continue. Waiting for Ease US Mobi Saver finish scanning your device and find all the files. Preview and select the files you want to backup, click "Recover" button to export and save them to your computer or other external storage devices.Windows 10 users might encounter i Tunes sync error 54 with i OS devices due to some incorrect permission issues, wherein the i Tunes folder becomes 'Read Only'.It will prevent your computer from syncing with the device you have connected to it.If anything goes wrong during the deletion process, don't panic, you have Ease US Mobi Saver i Phone data recovery tool to help you recover unlimited data deleted on your i Phone, i Pad or i Pod touch in three steps.