Originally Posted by kaaka.93
Then sm1 must develop it ...why for ULB and not for LB....
Because devs don't find a reason why they have to make recoveries for locked bootloaders when the bootloader is unlockable unlike Xperia L. In addition, it's much easier to make with an unlocked bootloader.
And there is network issues on unlocking bootloders is that rght??
No, there isn't.