Iphone 4 won't restore through itunes? Comes up with error 306?

My iphone won't turn on, or reset using the home and the power button it just stays on a blank screen. So I've been trying to restore it through recovery mode in itunes on my laptop. However when it comes up with the iphone recovery mode and gives the option to 'restore iphone' I click on it and it comes up with 'The software update server could not be connected unknown error 306'.
Anyone any idea how to fix this?

Proxy settings are messed up. Best luck.

https://discussions.apple.com/...2#18213422

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