HT201210 my iphone just died i dont know whats happened

my iphone just died i dont know whats happened, and i got unkown :error occurred (2001): when i want use it on itunes.
so what should i do now

Naif alshammari wrote:
.. i got unkown :error occurred (2001): ...
Error 2000-2009 (2001, 2002, 2005, 2006, 2009, and so on)
If you experience this issue on a Mac, disconnect third-party devices, hubs, spare cables, displays, reset the SMC, and then try to restore.
If you are using a Windows computer, remove all USB devices and spare cables other than your keyboard, mouse, and the device, restart the computer, and try to restore. If that does not resolve the issue, try the USB issue-resolution steps and articles listed for Error 1604 above. If the issue persists, it may be related to conflicting security software. If the errors persist on another computer and known-good USB cable, the device may need service.
Naif alshammari wrote:
my iphone just died i dont know whats happened, ...
iOS: Not responding or does not turn on
http://support.apple.com/kb/TS3281

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