I have the same problem, but... I can't acces to the recovery :/ i tried to install CWM (with Freegee) over Team win recovery and... boot loop :
The rom 4.2.2 flex was gone, no boot animation
-When i pres volum down + power, i have the reset menu, but after that, there is a black screen and it's written at the top left "started usb_start Fastboot Mode ()"
Please, i need your help, i'm so afraid !!