Bricked? ... I doubt it, that is extremely rare nowadays.
Unfortunately, flashing by USB can be a very tedious process, usually because it takes an age to find a USB stick that can be read...... try to find an old usb stick and re format to FAT32, then copy the latest ViX image onto the stick and try to reflash .....and follow the procedure e.g. no other usb connections other than the one used for the flash.
If you manage to flash, then lock up the usb stick somewhere safe for the next time!!