ZTE blade L2 bricked

Hi, my zte l2 originaly had android 4.2.2 trying to fix the "not enough space" i changed it for kit kat also with memories changes -external was internal and viceversa- but the problem remained so i tried another c way fussioning the "2 internal memories" but after that it won´t start, it frezzez on the start screen, tried to sideload but i'm only able to start on CWM and keeps canceling the instalations i try, i need to know how to revert the fussioned memories or better if somebody know how to instal kit kat that way please help