Problem with making ZBIN from Dump File-Easy JTAG Plus

Hi! Easy JTAG Great team support
I have a Samsung J500F/DS and ZBIN file isn't exist in Easy support . I have a dump file :
EMMC_ROM1_00000000_20000000 j500f-ds.bin
EMMC_ROM2_00000000_00400000 j500f-ds.bin
EMMC_ROM3_00000000_00400000 j500f-ds.bin
1-Which file we should use for making Magic SD card?
2-Do I need to make short test point before use magic card?
If Yes. were is the test point?

Thanks in advance