unlock bootloader on dead phone - General Questions and Answers

hi
I have a problem with My Sony Xperia Z3 dual (D6633) phone. When I am using my phone, it suddenly turned off and restarted, but it was stuck at the Sony logo and continuously restarting (boot loop at manufacture's logo). Cant get into recovery mode or nothing through my phone. When I googled I found Sony flash tool:
Emma from developer.sony.com/develop/open-devices/get-started/flash-tool/
when i connected to Emma my phone was detected but it showing the phone is LOCKED. I need to unlock bootloader, for that i went to
developer.sony.com/develop/open-devices/get-started/unlock-bootloader/
and i got an unlock CODE but now the problem is I can't access my phone's service menu..
Please help me to unlock the bootloader ...
Thanks in advance

Hello....
Anyone there...?

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