The recent update for Instagram for Android has caused some of my Xiaomi MI3 uploads to turn black. It is extremely frustrating, especially after all that painstaking effort to make your picture look the way you want.
Fortunately, there is a fix.
Go to your profile tab (bottom right). The go to the OPTIONS page by click the three-dot icon on the top right corner.
Under SETTINGS, click on Camera.
By default, Use High-Quality Image Processing is turned ON. Slide the switch left to turn it OFF.
Viola! No more black photo uploads!