ROM Hack [HELP] SteelDiverSW Custom CRC32 calculation

[Fox-kon]

I've dumped SDSW savedata with svdt.
and tried to edit on HxD,
The data was broken so I'd like to fix it.

Spoiler: Hex_twice_dumped

EC 30 F7 30 1B 00 00 00 CA 01 00 00 0B 00 00 00 |A4 90 C9 B8 1B 00 00 00 C5 01 00 00 0B 00 00 00
73 61 76 65 2E 73 75 62 2E 74 79 70 65 38 2E 63 |73 61 76 65 2E 73 75 62 2E 74 79 70 65 38 2E 63
72 65 77 32 00 FF FF FF FF 73 61 76 65 2E 73 75 |72 65 77 32 00 FF FF FF FF 73 61 76 65 2E 73 75
～below both left and right are same～

I followed this way
https://gbatemp.net/threads/animal-crossing-new-leaf-save-editor.382965/page-134#post-5541296
nevertheless the checksum still be incorrect...

Could you please tell me how to calculate CRC?