Deleted factory data from leaf system diagnose menu

[NightNeoS]

Hi, I have recently brought nissan leaf 2016 model. Car was working fine if its showing 73 miles range then it was giving 73 miles only thing nissan connect ev app was not working. So I was trying factory reset setting in car and I think I selected wrong option from internet in system diagnose menu(Using MAP,MAP,MAP,POWER,POWER,MAP) and looks like it deleted factory configuration data. After this action My rear camera and 360 camera stopped working and I am no longer able to see Nissan connect in car head unit. But my main issue is that this affected my car driving range. Yesterday I did full charge ma car it was showinh 83miles but it only gave 53miles so looks like ECU data deleted thats why car is not giving acurate miles. 
Does anyone know what that initialise factory data means? (Screenshot attached)
Do my car required ECU reprogramming?
Does anyone has any solution which I can try or only its something Nissan dealer needs to do?
I have called Nissan dealer and they asking initial £250 for diagnose and then they will let me know reset of repair cost.

Any help is much appreciated

IMG_4630.HEIC IMG_4631 copy.heic

[Trevor]

Sorry, not a clue but please do let us know how you get on with it