Try here and see if you can get any help..
Yes I checked the website from sony (and some other).
Does all of those Tools works on W8 ?
Because I did my best (including asking for bootloader unlock key) and I'm unable to make my fastboot mode recognize on W8 hardware list
If you got a clue, welcome .
Watever happens, thanks Guys and Girls for all the non-profit job you do for most of us.
(btw : I just want to root my Xperia SP to be able to pull away some sony' apz that work underflow and make it 60% ram used without launching anything; this of course, make it slow !!)
Can i use ONLY Rom on my Xperia SP Phone (Locked Bootloader) without change kernel and my phone not broke?