Q: My ip5s back cam wont work after updating it to ios 9.3.5. How to fix this now?

Hello viaromero,

Thank you for using Apple Support Communities. 

I understand from your post that the back camera is showing a black screen. I know how important it is for you to be able to use your back camera again. 

Get help with the camera on your iPhone, iPad, or iPod touch

You see a closed lens or black screen

If you see a closed lens or black screen when you open the Camera app, try these steps:

1. Make sure that there’s nothing blocking the camera lens. If you’re using a case, try removing it.
2. Force the app to close, then open the Camera app again.
3. Restart your device, then open the Camera app again.
4. If your device has a front and rear camera, try both cameras by tapping . If you see the closed lens or black screen on only one camera, take your device to an Apple Retail Store or Authorized Service Providerfor more help.

Best Regards