just search for hekate, download it and rename it to payload put on the root of your sd card. Boot Sx FW, in options ( right side) search for boot/launche external payload, then select (the renamed hekate).
on hekate go to tools, nand dump and dump raw nand and boot1/boot2.
note:i dont know why but if you dont rename the payload of hetate the console gets crashed.