I've been scouring the net trying to find the answer to this and all answers that are close talk about not connecting to the net. I have no problems on the internet, I am typing this on the pi3 that I'm having problems updating with.
I am hit with the following error upon attempting to update. Please help:
W: Failed to fetch http://mirrordirector.raspbian.org/raspbian/dists/jessie/InRelease Unable to find expected entry 'main/binary-i386/Packages' in Release file (Wrong sources.list entry or malformed file)
E: Some index files failed to download. They have been ignored, or old ones used instead.