I can confirm my Onion Omega2+ is connected to the internet via Wi-Fi.

Running opkg update seems to succeed:

root@Omega-780B:/# opkg update
Downloading http://repo.onioniot.com/omega2/packages/core/Packages.gz
Updated list of available packages in /var/opkg-lists/omega2_core
Downloading http://repo.onioniot.com/omega2/packages/core/Packages.sig
Signature check passed.
Downloading http://repo.onioniot.com/omega2/packages/base/Packages.gz
Updated list of available packages in /var/opkg-lists/omega2_base
Downloading http://repo.onioniot.com/omega2/packages/base/Packages.sig
Signature check passed.
Downloading http://repo.onioniot.com/omega2/packages/packages/Packages.gz
Updated list of available packages in /var/opkg-lists/omega2_packages
Downloading http://repo.onioniot.com/omega2/packages/packages/Packages.sig
Signature check passed.
Downloading http://repo.onioniot.com/omega2/packages/routing/Packages.gz
Updated list of available packages in /var/opkg-lists/omega2_routing
Downloading http://repo.onioniot.com/omega2/packages/routing/Packages.sig
Signature check passed.
Downloading http://repo.onioniot.com/omega2/packages/onion/Packages.gz
Updated list of available packages in /var/opkg-lists/omega2_onion
Downloading http://repo.onioniot.com/omega2/packages/onion/Packages.sig
Signature check passed.

However, even after running opkg upgrade oupgrade, oupgrade still fails:

root@Omega-780B:/# oupgrade -c
Failed to parse message data

root@Omega-780B:/# oupgrade
Failed to parse message data
Failed to parse message data
WARNING: Variable 'image' does not exist or is not an array/object
WARNING: Variable 'repo' does not exist or is not an array/object
> Downloading new firmware ...
Downloading ''
Failed to allocate uclient context
Downloading ''
Failed to allocate uclient context
Downloading ''
Failed to allocate uclient context
Downloading ''
Failed to allocate uclient context
Downloading ''
Failed to allocate uclient context
Downloading ''
Failed to allocate uclient context
Downloading ''
Failed to allocate uclient context
Downloading ''
Failed to allocate uclient context
Downloading ''
Failed to allocate uclient context
Downloading ''
Failed to allocate uclient context
Downloading ''
Failed to allocate uclient context
Downloading ''
Failed to allocate uclient context
> ERROR: Downloading firmware has failed! Try again!

Any advice as to how to proceed?