I think its wrong of you guys to accuse him of being impatient. There are valid reasons why you would like to do this as soon as possible, like the rumored fix for the phantom taps which has been bugging the 1520 since launch. And it is possible with Nokia PST, and I would've done it myself, but does not work on Windows 10 TP.
Of course there's always a risk, but that it's up to the user if he wishes to do it or not.
I will add in some links to this post as soon as I'm by my computer, that will show what's needed for this.