On the "Installing HiyaCFW" page, at the SDNAND Creation section, fuse-3ds is not required because hiyacfw_helper creates a nand_dec.bin file that can be directly mounted with OSFMount, which will show some partitions to choose, and choosing the big one will give access to the files in twl_main.img.
On linux, the file can be read by creating loop devices from it with kpartx and mounting them with mount.
On macOS I did it by attaching it as a raw disk image using hdiutil and then mounting it with diskutil.
On the "Installing HiyaCFW" page, at the SDNAND Creation section, fuse-3ds is not required because hiyacfw_helper creates a nand_dec.bin file that can be directly mounted with OSFMount, which will show some partitions to choose, and choosing the big one will give access to the files in twl_main.img.
On linux, the file can be read by creating loop devices from it with kpartx and mounting them with mount.
On macOS I did it by attaching it as a raw disk image using hdiutil and then mounting it with diskutil.