Convert Wii(U) NANDs with ECC to NAND images w/o ECC.

slc_unwrap.py

#!/usr/bin/python3
f = open("SLC.RAW", "rb")
f_out = open("SLC.partial.bin", "wb")

while True:
    contents = f.read(0x840)
    if len(contents) < 0x800:
        break
    unwrap = contents[:0x800]
    f_out.write(unwrap)

f.close()
f_out.close()