Nexenta Can't upgrade 3.1.5 -> 3.1.6 -> 4.0.3

nmc@ICSSAN1:/$ setup appliance upgrade
Cleanup upgrade caches (note: cleanup is generally not required and can be skipped in most cases; if you say Yes, prepare to wait for software upgrade to complete a bit longer) ?  Yes
You are about to upgrade the appliance software. Please be advised that by executing this operation you agree to be bound by the terms of the product license available at http://www.nexenta.com/nexentastor-licenses. This operation may take some time to check with the remote appliance's software repository. Proceed?  Yes
Checking repository sources. Please wait...
No new upgrades/packages available.

nmc@ICSSAN1:/$ show appliance version
NMS version:  31-5-0
NMC version:  31-5-0
NMV version:  31-5-0
Release Date: Sep 26 2013
Operating System: Nexenta/OpenSolaris (version 3.1.5)
Copyright (c) 2005-2013 Nexenta Systems, Inc. All rights reserved.

nmc@ICSSAN1:/$ ping google.com
google.com is alive

nmc@ICSSAN1:/$ show appliance upgrade
RELEASE  STABILITY  DESCRIPTION
3.1 *    testing    Open Storage Appliance v3.1.6-FP2
nmc@ICSSAN1:/$ setup appliance repository show
deb http://apt.nexentastor.org/3.1 hardy-testing main contrib non-free
deb-src http://apt.nexentastor.org/3.1 hardy-testing main contrib non-free



Forbidden

You don't have permission to access /3.1/ on this server.