Hi Fraser, I appreciate the advise! Although I have tried this and it still doesn't work. I've manually changed the IP address' of all of my devices as well as my partner's and it is still causing issue's. I've tried reverting back to the .50 firmware from netgear which was the last official release but it just reboots the router and doesn't actually perform the firmware upgrade/downgrade. I have also tried the hard reset button which, again, only resulted in the router rebooting. Any other advice to roll back to the official release?
After remoting into my computer from work, I was able to upload the last official NG release and it worked. I have no idea as to why it wasn't working whilst I was physically in front of the computer and router -.-