I have an SD card with a boot image flashed. I recovered from a wrong bootloader hard brick using it. Samsung phones will attempt to boot from SD card when unable to boot otherwise. Could you provide me with an Odin or safe strap flashable of your bootloader?It may work. In theory because the base models are the same and can run the same ROMs. But my fear would be that if you bork your bootloader your device would be hard bricked. You need the bootloader to even start the boot processes.