Q: iPhone will not restore.

Okay, so my brother changed his password and forgot it one night, he turned the wifi off which was very dumb. I am out of the country so i dont have the best of wifi. So, i tried to restore it by recovery mode but it will not work. The phone exits recovery mode after 15 minutes but it says it needs 3 hours to restore. Ive tried doing this 5 times but still no luck. If you know how to solve this, please help. It's an iPhone 6.