[CLOSED] briked Xiaomi Mi 10T with bootloader loked.

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Hello.I'am really newbie. Need Help!I have a xiaomi Mi 10T not working.It don't start right.It start in fastboot mode (volumeDown+power buttons), I see it if I play "fastboot devices".It start also in Recovery 5.0, if I choose "Connect with MIAssistant" I see the phone with "adb devices".But I can't flash anythings becouse I have "bootloader loked".I have not the original MI Account.I have not the original usb cable.I think I have start in EDL mode, but I don't know how.