So today all the old problems returned.
Between each round I had to re-calibrate the ESC to the transmitter every time. And any settings programmed in were lost if the ESC was powered off.
Edit: Using the G force software I was able to re-flash the firmware by downgrading it to a previous version & then bringing it back up to 2.07. Now it's back to normal
It would seem that I was trying to use the Gforce app during some sort of systems outage their end.