While I am staying at the M-in-laws place my new  HG630b VDSL router arrived for my Morrinsville place.  Logged in to it and change the password   but when I went to do the internal setup like  set DHCP range, setup WiFi and port forwarding I would get and invalid  data error everytime.   The software version on this unit was B022.  I logged into the M-in- Laws and saw her's  was B021 and I could change stuff on it.   Went to the spark site and downloaded the latest  firmware  and found that was also B021.  Installed it  on my new one and now I can change the settings. 

Suspect that the new B022 version has a nasty bug..