Note: if you need to restore a specific version of firmware onto your device, rather than click restore, hold shift (PC) or option (MAC) and click restore.This will bring up a browse box where you can select the firmware you wish to program.
If you are performing a downgrade (1.1.4 to 1.1.3, for example), this is normal.
Have you encountered any problem with syncing your i Phone, i Pad, i Pod Touch? Security software, anti-virus software, is, of course, meant to help you.
However, Apple have issued a notice stating that there may be some of these type of software which is sometimes interrupting the connection to Apple's servers.
Hold on the sleep/wake button at once for about ten seconds. Connect your device to the computer, launch i Tunes and try to update again.
Now, in the Finders menu bar, you need to select Go → Go To Folder. Up next in the box, you will have to type the following location and press Enter. The Finder window will appear and the host file will be selected. After the process is completed, you have to put the host file into the folder.