How to Fix iTunes Errors 16xx (1600,1601,1602,1603,1604)

When you try to restore, update or downgrade your iPhone’s iOS, you might face any of the following iTunes Errors:

• 1600
• 1601
• 1602
• 1603
• 1604

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 mode.
• iTunes will recognize a device in DFU mode and prompt you to restore it.
• Now try restoring your iPhone. Hopefully, this should set it right.

Step 4: If that didn’t work, you should try:

• Download and run TinyUmbrella
• In TinyUmbrella, click Start TSS Server
• Now try restoring your iPhone to stock firmware.

Step 5: Try iReb

• Download the IPSW firmware file for the iOS you want to update to.
• Open iTunes, put your iPhone in DFU mode
• Close iTunes (after DFU) and then start iReb.
• Within iReb, select your device
• Now, after a while, you’ll get a white/red screen displayed on your iPhone. Don’t panic.
• After this, open iTunes.
• Choose “Shift+Restore” (Windows) or “Option+Restore” (Mac) and select the IPSW file you downloaded in step 1.
• Finish restoration. Hopefully, the errors shouldn’t occur.

Please leave a comment if this is useful to you.