IT is still looking into the issue.
In the meantime there are several options for SW upgrades:
1. Use automatic updates. This is not working for some as the DNS server they are using has not received the updated IP address. The old address for images.arubanetworks.com is 199.27.105.183 and the new IP is104.36.249.199.
2. You can log into the TAC site and manually download IAP upgrades. This assumes you have an active support contract.
3. You can point your web browser to: http://104.36.249.199/fwfiles/ArubaInstant_Orion_6.3.1.8-4.0.0.7_44641 to download the file to your PC then manually upgrade.
4. You can go to the IAP maintenance page and specify the upgrade URL as: http://104.36.249.199/fwfiles/ArubaInstant_Orion_6.3.1.8-4.0.0.7_44641
NOTE: You need to specify the HW type as part of the URL above. In the example provided "Orion" refers to : -92/93, -104/105, -175, RAP-3.
Aries=RAP-155
Cassiopeia= -134/135
Centaurus=-224/225, -274/275
Pegasus= -108/109, -114/115, -103
#RAP155