Just a little update - I've tried about 5 times turning the drone on a off and on the 6th go the drone some how picked up the firmware and then gave me the continuous beep error. The app said - Error updating firmware.
I'm now going back to 1.9 and trying the whole process again.
I formatted the card and then upgraded everything back to 1.9. Then I formatted the card and tried to roll back to 1.8 and this time it worked for both the Camera and the Aircraft.
Hope this helped. Took me a few goes and 5 hours of my time.