Upgrade to v1.4
You can upgrade your access gateways doing SSH directly into them and
apt-get upgrade, with some required modification steps.
As of v1.3.2, the apt source needs to be updated in order to get the latest tagged AGW build. Hence, it is required to modify /etc/apt/sources.list.d/packages_magma_etagecom_io.list on the gateway. Instead of “stretch stretch-1.3.3 main", please replace with "stretch-1.4.0 main".
Upgrade from v1.3.x to 1.4.0 for the Access Gateway will require operators to use a force option else the upgrade may fail due to unmet dependencies. To mitigate this issue, it is recommended that the upgrade be done in the following fashion:
sudo apt-get update
sudo apt-get upgrade magma -o Dpkg::Options::="--force-overwrite"