why we need to unlock bootloader for XPERIA L

[abgrxenda]

OK, I have XPERIA V, XPERIA Z, XPERIA L, and once I got them I started to root three of them, Xperia V and Z was a one click easy root processing, no unlock process boot-loader or any hassle, and rooting is working perfect with full function, but with XPERIA L, all the batches need to the boot-loader to be unlocked in order to success, and whoever is having blogs to say it can be done with one click is bluffing

now my question for the discussion is, why XPERIA L need to the boot-loader to be unlocked while XPERIA V & Z does not require this process?

deep technical details are 100% welcome

[Thommo]

Probably because you can Root without unlocking the bootloader - search for Framaroot and use the Gandalf method

[Thommo]

Better still here's the link http://forum.xda-developers.com/showthread.php?t=2130276

[abgrxenda]

i already did that and it is not working with 4.2.2 15.3.A.1.14

i need the technical reason why Xperia L need to unlock it while V &Z didn't require that

[Thommo · Accepted solution]

Try this then http://forum.xda-developers.com/xperia-l/general/root-firmware-15-3-1-12-t2591290

[abgrxenda]

That did the job with one click, but my research behind this is to know the technicality behind why each model need a different method while they are running on the same version!!!

[Thommo]

Qualcom and drivers and the kernal will be different - So different kernals will or may require different methods