Iphone 6S stuck in black screen/dfu
I'm having problems with an Iphone 6s. It suddenly went black. I tried pressing the home and power buttons together to force a restart but nothing worked. Afterwards I plugged the phone into my computer and opened it Itunes. It said the device needed to be restored(with erasing all the data). Is there a way to circumvent this and keep the data? The phone hasn't been jailbroken or anything. Thanks for for your help
iPhone 6s