The upgrade WAS done from the Web GUI.
I pulled one of our new FG-50s from inventory (we' re a reseller) and loaded it with the same OS and the same config from that client. Did the upgrade and it did NOT give the same warning. It accepted the upgrade and kept the config however after I did this the FG-50 would not pass packets out the WAN port which was confirmed working just moments before on the earlier OS.
I removed all config parameters from the WAN port, added them back in with no change. Reset box back to Factory but still couldn' t get the WAN port to come back. I had a protocol analyzer on the WAN port at all times and at no time observed any packets coming out that port. The noticed that the my config was still on the box and the factory reset had not succeeded. Tried a factory reset from the cable console and it too did not clear my config.
Tried to downgrade back to MR6 and received a message that there " was no room for image in memory" . I then tried to downgrade via TFTP and discovered that neither the LAN or WAN ports would accept an image. Also verified during this part of the test that neither port had put out a single packet of information.
Because this is a brand new, unsold unit I' m reluctant to register it so I can get tech support as that would start the time ticking for me to sell this unit. I' d hate to sell a new unit and tell the customer that you have something less than 90 of warranty because I was doing testing with your box before I sold it to you.
Kevin Ericson, Pres., FCNSP
Certified Fortinet Engineer
Deadbolt Security Networks
9791 W Stanford Ave #5D
Denver, CO 80123