I was tried to root my xperia neo l but after flashing with the kernel(connect usb by pressing back) the phone didn't turn on anymore only red light blinks at each 3 seconds. And when i tried to connect it pc some times it detected as sony a0102 adb interface in device manager and then again the led blinks (in device manager Usb device not recognized")and then sony a0102.... Appears in device manager This process continues. Installed flashtool but when the phone detect it says usb "debugging off"