Trying to get everything setup before wiring...

Trying to get everything setup before wiring…
When I try to do an update i get this error:
W: GPG error: http://feeds.thing-printer.com jessie InRelease: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 4C7E98C0315373BE
W: Size of file /var/lib/apt/lists/ftp.us.debian.org_debian_dists_jessie-updates_main_binary-armhf_Packages.gz is not what the server reported 4932 4936

http://ftp.us.debian.org

http://feeds.thing-printer.com is the old debian feed. The new is http://kamikaze.thing-printer.com

fixed!
“sudo wget -O - http://feeds.thing-printer.com/apt/debian/conf/replicape.gpg.key | sudo apt-key add -”
worked for me

hmm, I ran sudo apt-get upgrade first then apt-get update, how should I properly get my system up to date?

update first then upgrade. It’s counter-intuitive, but apt-get update only updates the catalog of software versions. The upgrade command is what installs them.