For anyone who is comfortable using python I wrote a python 3 script to automate the process:
Example usage:
Extract Switch save with Edizon or Checkpoint (ie. ff8slot00). Place extracted save in same folder as the script.
Run the script with the following command to extract the FF8 save data:
Once you have the save.ff8 file, open it in Hyne and edit it. Or you could use an already existing FF8 save from the PC version or from wherever. When ready to inject it back into the Switch save run
Once injected, use Checkpoint or Edizon to import the modified ff8slot00 back into your Switch and enjoy.
I've tested this out on a few different saves of varying sizes and had no issues. If someone finds a save that fails to import on the Switch, let me know.
Code:
#!/usr/bin/env python3
# Author: AnalogMan
# Modified Date: 2019-09-08
# Purpose: Injects or extracts FF8 save data to Switch save
import sys, os, argparse
def main():
print('\n======== FF8 NSW Save Tool ========\n\n')
if sys.version_info <= (3,1,0):
print('Python version 3.1.x+ needed to run this script.\n\n')
return 1
# Arg parser for program options
p = argparse.ArgumentParser(description='Inject or extract FF8 save data to Nintendo Switch save')
g = p.add_mutually_exclusive_group(required=True)
p.add_argument('nsw_file', help='Path to Switch save')
p.add_argument('ff8_file', help='Path to FF8 save')
g.add_argument('-i', '--inject', action='store_true', help='Inject FF8 save into Switch save')
g.add_argument('-e', '--extract', action='store_true', help='Extract FF8 save from Switch save')
# Check passed arguments
args = p.parse_args()
# Check if required files exist
if os.path.isfile(args.nsw_file) == False:
print('Switch save cannot be found\n\n')
return 1
if args.extract == True:
try:
with open(args.nsw_file, 'rb') as nsw:
save_len = int.from_bytes(nsw.read(4), byteorder='little')
ff8_data = nsw.read(save_len)
with open(args.ff8_file, 'wb') as ff8:
ff8.write(ff8_data)
print('FF8 save file extracted successfully.\n\n')
except:
print('Save could not be extracted.\n\n')
if args.inject == True:
if os.path.isfile(args.ff8_file) == False:
print('FF8 save cannot be found\n\n')
return 1
try:
with open(args.ff8_file, 'rb') as ff8:
ff8_data = ff8.read()
with open(args.nsw_file, 'rb+') as nsw:
nsw.write((len(ff8_data)).to_bytes(4, byteorder='little'))
nsw.write(ff8_data)
print('FF8 save file injected successfully.\n\n')
except:
print('Save could not be injected.\n\n')
if __name__ == "__main__":
main()Example usage:
Extract Switch save with Edizon or Checkpoint (ie. ff8slot00). Place extracted save in same folder as the script.
Run the script with the following command to extract the FF8 save data:
Code:
python nsw2ff8.py -e ff8slot00 save.ff8
Code:
python nsw2ff8.py -i ff8slot00 save.ff8I've tested this out on a few different saves of varying sizes and had no issues. If someone finds a save that fails to import on the Switch, let me know.
Last edited by DocKlokMan,
