A few 11xx errors are also associated with the same process of fixing these errors. Before we begin let’s first understand why the error crops up in the first place. When you try to restore, update or downgrade your iPhone’s iOS, you might face any of the following iTunes Errors:
16001601160216031604
According to Apple, all those 16xx errors listed above except 1604 are associated with firewalls and/or security software installed on your Mac/PC. The 1604 is recorded as a USB timing error where it mostly gets sorted when you change ports or use a different computer to restore/update. Here are the things you should try to fix these iTunes errors 16xx (1600,1601,1602,1603,1604): Step 1: Make sure you’ve got the latest iTunes software Step 2: Check to see if your USB ports are good. Don’t use hubs to connect the iPhone to the computer. Change the port if you’re getting a 1604 error. Step 3: If the error still shows up, try the following:
If you’re trying to update, backup all data and then enter your iDevice in DFU modeiTunes will recognize a device in DFU mode and prompt you to restore itNow try restoring your iPhone. Hopefully, this should set it right
Step 4: If that didn’t work, you should try:
Download and run TinyUmbrellaIn TinyUmbrella, click Start TSS ServerNow try restoring your iPhone to stock firmware
Step 5: Try iReb
Download the IPSW firmware file for the iOS you want to update toOpen iTunes, put your iPhone in DFU modeClose iTunes (after DFU) and then start iRebWithin iReb, select your deviceNow, after a while, you’ll get a white/red screen displayed on your iPhone. Don’t panicAfter this, open iTunesChoose “Shift+Restore” (Windows) or “Option+Restore” (Mac) and select the IPSW file you downloaded in step 1Finish restoration. Hopefully, the errors shouldn’t occur
Let us know if you’ve got other work around to fix the 16xx errors in iTunes.