Xperia Z3 no power, not charging and unrecognized on PC after flashing

hi, just have my xperia z3 and i decided to flash and update my phone from kitkat to lollipop using flashtool. Unfortunately, I flashed the the wrong firmware (D6603, supposedly D6613). Now the phone does not turn ON, charging and hardly not recognized by the computer when connected ("USB unrecognized and malfunction"). I've tried different computers but still the same, I cannot flash the right firmware because it cannot be detected by the computer. Is there anyway or need to do to make it work. Please help, I appreciate any ideas you may share.:crying::crying:

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