I have no experience with flashing firmwares, but maybe this can give you some clues
https://forum.xda-developers.com/t/sm-r365-stock-firmware-and-combination-firmware.3846301/
I have no experience with flashing firmwares, but maybe this can give you some clues
https://forum.xda-developers.com/t/sm-r365-stock-firmware-and-combination-firmware.3846301/