is it failing because either:
1) you didn't wait long enough for the new version to be built (20min+ as Lee said)
2) you have to re-enter your license and Save it on the config screen
I made both these mistakes in the past. An HDMI to a monitor really helps, as well as keeping your license email. With monitor connected I got multiple 'fail eth' and 'fail wan' messages, the 'eth' message contained the MAC address, same as on the WiFi SSID