Unhappy [Q] flashing cm11, after aosp 4.4.2, then cant revert to cm11

hello. so i flashed the cm11 beta 2 on my lg l5 610. wanted to try also the aosp 4.4.2 stock, but was a bit laggy. so i decided to go back to cm11. after flasing it, with cwm, it got into a loop, just the cm boot screen. done that many times( clearing cache, clearing data), reinstalling the cm11. no succes. all was done by recovery .