Sony Xperia Z3 D6616 possibly hard bricked?

Hi all! I have a Sony Xperia Z3 I recently acquired, it seems to be bricked, possibly hard bricked I'm not sure, but the phone refuses to boot into fastboot or flashmode. Here's what I've noticed so far:

NOTE: the bootloader was unlocked, the phone got bricked after flashing a build of cyanogenmod on the device.

• The phone shows a red LED when left plugged in to charge overnight
• If power button + volume up buttons are held, the red led turns off and the phone vibrates 3 times, but nothing else happens
• When connected to the computer via USB, the red led will appear again for a couple seconds, then disappear, then appear, and repeats this process until unplugged. While this is happening you can hear the computer recognizing the phone being constantly plugged in and unplugged.
• When plugged into the PC, flashtool recognizes the phone as "Device Connected with USB debugging OFF"
• Booting into fastboot or flashmode doesn't work, no matter what button combinations I've tried none of them worked to put the phone in either of these modes.

Is there any way I can unbrick the phone? I don't think this is a driver issue as the computer is recognizing the device in device manager and flashtool sees it, however shows "Device Connected with USB debugging OFF". Is there anyway to somehow enable USB debugging in this state?

I've also tried using adb commands to reboot into fastboot, however this is pointless as the phone is not recognized as an ADB device, when you type "adb devices" there is no devices listed.

HUGE thanks to anyone who has any input on my situation, any help is gladly appreciated! Thank you everyone!

from xda-developers http://ift.tt/1Siy5WC
via IFTTT