Hi.
When updating my BeagleBone Black running Debian 8, I get this here:
root@bbb-one:~# apt-get update
Hit http://security.debian.org jessie/updates InRelease
Hit http://repos.rcn-ee.com jessie InRelease
Ign http://ftp.us.debian.org jessie InRelease
Get:1 http://security.debian.org jessie/updates/main armhf Packages [802 kB]
Hit http://ftp.us.debian.org jessie-updates InRelease
Get:2 http://repos.rcn-ee.com jessie/main armhf Packages [1013 kB]
Hit http://ftp.us.debian.org jessie Release.gpg
Hit http://ftp.us.debian.org jessie Release
Get:3 http://security.debian.org jessie/updates/contrib armhf Packages [994 B]
Get:4 http://security.debian.org jessie/updates/non-free armhf Packages [4416 B]
Get:5 http://ftp.us.debian.org jessie/main armhf Packages [8898 kB]
Get:6 http://ftp.us.debian.org jessie/contrib armhf Packages [44.3 kB]
Get:7 http://ftp.us.debian.org jessie/non-free armhf Packages [74.9 kB]
Fetched 10.8 MB in 18s (581 kB/s)
W: Failed to fetch http://ftp.us.debian.org/debian/dists/jessie-updates/InRelease Unable to find expected entry ‘main/binary-armhf/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.
sources.list shows:
root@bbb-one:~# cat /etc/apt/sources.list
deb http://ftp.us.debian.org/debian/ jessie main contrib non-free
#deb-src http://ftp.us.debian.org/debian/ jessie main contrib non-free
deb http://ftp.us.debian.org/debian/ jessie-updates main contrib non-free
#deb-src http://ftp.us.debian.org/debian/ jessie-updates main contrib non-free
deb http://security.debian.org/ jessie/updates main contrib non-free
#deb-src http://security.debian.org/ jessie/updates main contrib non-free
#deb http://ftp.debian.org/debian jessie-backports main contrib non-free
##deb-src http://ftp.debian.org/debian jessie-backports main contrib non-free
#Kernel source (repos.rcn-ee.com) : https://github.com/RobertCNelson/linux-stable-rcn-ee