error code 4045

I got this error after I dropped my phone from around half a meter. It fell on its top right corner, the screen turned black immediately, I couldnt boot it anymore. Same situation, update/restore via itunes was unsuccessful.

Solution: I opened the phone myself and found that the front camera had loosened when it fell. I managed to fixate the front camera with a small piece of a zip tie. I re-mounted the screen on the phone and -- I couldnt believe my eyes -- it turned on again! It's in perfect working condition since :)

So I believe 4045 can mean something like "device is unable to identify/connect to a hardware component", like in my case the front camera.

PS: The piece of plastic is still in my phone

Please follow the steps in the following link for support with this issue: If your iOS device restarts or displays the Apple logo or a spinning gear unexpectedly