Casper Via V6X Bricked. Can't Boot Into Recovery Mode I've an Android device, Casper Via V6X.

The device is not booting. I get the vibration and see the logo of the device but then nothing happens. When the device is closed and plugged in, it shows that battery is charging.

I also tried to boot into recovery mode with Volume Up + Power, Volume Down + Power, Volume Up + Volume Down + Power button but still got the short vibrate and logo, then nothing.

I've tried to access to device through ADB but as I expected since the device is closed, my computer can't access the device so ADB always fails to connect to device.

Any suggestions?

Edit: Seems like device is bricked. I've found a ROM and some Qualcomm softwares and tried to connect to device. And then I've flashed it. The console logged that download was successfull and finished. The guides that I've followed claimed that if you see this message that means process is completed so you can run your device. But still, it's not booting.
See if you can recognize the device through fastboot. adb only sees the device if you enable it in recovery or if the device is booted into normal system.