if this app is installed, do you guys think that its stlll possible to reflash the fon to become usable to the thief?

am gonna purchase this app but I just need to clarify some things in my head like this question of mine!

TIA! :D

I think someone was to steal your phone then they obviously dont have the money to pay for one in the first place therefore it is highly unlikely they could afford a flash box or would have the brains to take it to a nokia shop (They would also fear they would be caught)