During i OS update, you have to put i Phone into recovery mode, which may cause a restart-loop or i Phone gets stuck on red i Tunes logo, especially when not done properly.
In that case, you have no choice but to restore your i Phone. Note: Make sure you've backed your i Phone up before restoring since this operation essentially restores your i Phone to factory settings.
Maybe your computer does not recognize the firmware file.
So the first thing you need to do is restarting your computer.
Absolutely, you also can get them to i Device again after extracting from backups. Added with the features of Phone Clone and Phone Merge.
They help you upgrade to new i Phone or i Pad smoothly, because you can transfer data between two i Devices directly without using i Tunes or i Cloud.
i Mobie Any Trans Overview: When creating an i Tunes backup, you may also meet many kinds of problems as well as restoring your i Device with i Tunes backup.
For instance, i Tunes can't recognize your i Phone i Pad , i Tunes backup can't be saved on computer, having not enough space on computer , etc.
In some cases, upgrading i Tunes can't solve the problem of firmware file is not compatible.
But sometimes uninstalling i Tunes from your computer, the files and something caused this problem may be removed. Have you found that it is very troublesome to restore i Device in i Tunes with IPSW files?
You can take advantage of Tenoshare i Phone Data Recovery tool which offer you 3 ways for i Phone data backup and restore.
Check how to recover lost i Phone 6s/6 messages for detailed info.
So you can try to uninstall i Tunes from your computer, and then install it again. Run i Tunes and then click Device button on i Tunes. Hold down Option key (Shift key on PC) and then click on "Update" or "Restore". Select the IPSW file you downloaded and click "Choose". If you are also fed up with the boring i Tunes, next we will offer you another solution to fix the i Tunes backup & restore problem of the firmware file is not compatible – with an alternative to i Tunes.