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.

  • If I enter the address of the file into a web browser i hit the file immediately. mirrordirector.raspbian.org/raspbian/dists/jessie/InRelease
    – Frank
    Sep 6, 2017 at 3:03
  • 2
    i386 indicate that it is looking for the wrong architecture, a Raspberry Pi is a ARM based processor.
    – MatsK
    Sep 6, 2017 at 4:17
  • 1
    Ok... That makes sense but how do I point it to the right architecture?
    – Frank
    Sep 7, 2017 at 3:45
  • 1
    armv7.1cat /etc/apt/sources.list deb mirrordirector.raspbian.org/raspbian jessie main contrib #non-free rpi # Uncomment line below then 'apt-get update' to enable 'apt-get source' deb-src archive.raspbian.org/raspbian jessie main contrib non-free rpi
    – Frank
    Sep 7, 2017 at 18:49
  • 1
    dpkg --print-foreign-architectures = i386
    – Frank
    Sep 7, 2017 at 18:51

1 Answer 1


You should remove the i386 architecture since you are running a ARM architecture. But first you need to remove packages from the wrong architecture that have been installed:

apt-get purge ".*:i386"

And then:

dpkg --remove-architecture i386

Ref.: https://wiki.debian.org/Multiarch/HOWTO

  • 1
    Thanks again. And thanks for the link to educate me. I appreciate your help. @MatsK
    – Frank
    Sep 10, 2017 at 11:29

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