So, I got an used Xperia ZL. The person who sold me this said he installed an international firmware, 4.3 and after installing SuperSU I noticed the device is rooted (and bootloader is locked). Now, I want to install a custom ROM but I cannot access Recovery mode! When phone starts there is no LED, pressing volume up does nothing, I installed Quick Boot, clicked restart on recovery but it does nothing. I even tried ADB boot recovery but the phone just restarts normally. What can I do?? I'm going crazy with this phone. Thanks for the help!