Steps to fix iPhone or iTunes Error 3419
Step 1. Select the system recovery toolkit and connect iPhone to PC
First of all what you have to do is download and install iPhone data Recovery on your computer. After running it, you can see all the tools from the main interface, please choose "System Recovery". Next, connect your iPhone to your computer via the USB line. When the program detects your phone, click "Start".
Note: After using this tool, your iPhone will be updated to the latest iOS version. And if your iPhone is a jailbroken one, then it will be updated to non-jailbroken. If you have unlocked your iPhone before, then it will be re-locked again.
Step 2. Download and select firmware for your iPhone
Next, the program will into another interface, you need to select and download the appropriate firmware for your iPhone. The program will automatically detect your iPhone model and provide the latest version firmware. You just need to click "Download".
Step 3. Fix your iPhone to normal
When the firmware download is finished, the program will automatically repair your iPhone. It will take you a few minutes. When your iPhone fix to normal mode, the program will display "repair of the operating system is complete" message. Now, your iPhone get rebirth, just check and enjoy it.
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