As mentioned in many of the articles you can read on this page, when updating or restoring your iPhone, no matter which model you own, errors may occur. If the problem you currently have is error 3003, we will try to help you out as best as we can. Further down, you can read 5 ways to fix iPhone error 3003. Some of the solutions are a bit simpler than others, but the most important thing for you is to try them all if necessary, until you find the one which will make the error disappear.
See also: 5 Ways To Fix IPhone Error 1650
5 ways to fix iPhone error 3003
Solution No.1: Update iTunes software.
It is crucial to make sure that your iTunes software is up to date. For both, Mac and Windows users, the process is practically the same. Open the software first. If you are using Mac, click on the menu bar, click on iTunes, and choose Check for Updates. If you are using Windows, click on the menu bar, click on Help, and choose Check for Updates.
Solution No.2: Reinstall iTunes and related programs.
If updating the software was not helpful, remove iTunes from your computer completely. Also, remove the following programs:
- Apple Application support
- Apple Mobile Device Support
- Apple Software Update
Solution No.3: Restart your phone and your computer.
Often, when the error occurs, users forget about the basic solutions which work in many situations. What you need to do is to restart your computer, and your iPhone. Once you do that, try to update or restore your device. Maybe the error will be gone.
Solution No.4: Restart your modem.
Sometimes, error 3003 is related to your Internet connection. Restart your modem and try again.
Solution No.5: Several options with Antivirus program.
First, update the program if possible. If that does not fix the problem, turn the program off, and try to update your device, and if that is not helpful either, uninstall it from your computer, and try again.
If none of these 5 ways to fix iPhone error 3003 did not work, wait for an hour or two, and then try again. If that does not help, contact Apple, and ask them for the assistance.