iPhone unknown error summary and solution, the following are commonly occur several errors in iPhone connecting iTunes ,tips and fixes: (for reference)
Unknown Error 1002: iPhone 3G baseband or chip damage, please contact your service provider.
Unknown Error 14: the firmware download existing problems, please re-download. Or contact the firmware download provider.
Unknown error 1, error 6: no in degraded mode, replace the USB port, preferably the rear of the chassis, restart the computer, or hit the USB cable leading to interruption, please do not touch the USB cable in recovery process.
Unknown error 1013, 1015: reboot the computer, replacing computer; reinstall the system, immediately use low version of 2.1 firmware to recover, into DFU mode, then jailbreak and activation!
Unknown Error 1417: replace USB port back of the chassis.
Unknown error 1602, 1604: Restart the computer, replacing computer, reinstall the system.
Unknown Error 1603: Restart the computer, replacing computer, reinstall the system. Refer to related content: http://docs.info.apple.com/article.html?artnum=305868
Unknown error -35: Please refer to the relevant content: http://docs.info.apple.com/article.html?artnum=93069
Unknown Error -50: delete Storm video, Quicktime, iTunes, and then reinstall iTunes. Refer to related content: http://docs.info.apple.com/article.html?artnum=303887
Unknown error -9800, -9815, or -9814: Set the correct date, restart the computer. Refer to related content: http://docs.info.apple.com/article.html?artnum=93046
Unknown Error 1413: Restart the computer; replacement USB port; reinstall the system. Refer to related content: http://docs.info.apple.com/article.html?artnum=304505
Unknown error 1415, 1417, 1418, 1428: You need to reboot the computer, replace USB port, reinstall the system.
Unknown error 0×666D743F:
Method One
1. Press the “Start” button and select “Control Panel.”
2. Open the QuickTime control panel, select the “Audio” tab.
3. In the “Device” column to abolish “security mode (only waveform output)” option, press the “Apply.”
Method Two
1. Press the “Start” button and select “Control Panel.”
2. Open “Sounds and Audio Devices” control panel.
3. Select “Volume” tab.
4. Press the “Speaker Settings” under “Advanced” button.
5. In the “Speaker settings” pop-up menu, press the “stereo headphones.”
6. Press the “Apply”, then click “OK.”
7. Open iTunes.
