I unlocked bootloader nd rooted my xperia ion. And after that i accidentally flashed kernel of xperia P cyanogenmod. Now the phone does not boot. I mean it just keeps on vibrating. What to do?? Is it soft bricked?? The phone is not connecting in fastboot mode,otherwise i would have flashed the appropriate kernel for the particular rom. I followed the routine procedure of pressing volume up button nd connecting the usb cable.