Default [Q] Rooting

Hello there,

I am trying to root my Sony Xperia Z ( 6603 ) which is currently on Android 4.4.2 [ Built 10.5.A.0.230 ]

This is my first time rooting my device but what from I have heard, I can do it in 2 different ways.

1 Way
  • Downgrade to 4.2.2 [ Built 10.3.A.0.423 ] FTF File Link
  • Use easy rooting method

2 Way
  • Unlock Bootloader ( Loose DRM Keys and Warranty, etc )
  • Root the Device

I just want confirm that I might go for the 1st way.

So I simply ( back up if I want)
Copy the .ftf file I downloaded into Firmwares ( Flashtool )
*Download latest drivers?
Flash .ftf file on my device
Follow the Prompts (do the Volume key down and plug etc,)
Wait to complete
Voila! I am back to 4.2.2

Now I just follow the Easy Rooting by Doomlord

Can anybody confirm that this is the correct way? It's I'm kinda newbie to rooting