Inspecting Alinco DJ-G29T firmware

Alinco DJ-G29T firmware updater softwate 

DJ-G29T ver.1.10NEW.msi => unzip, Instal01,cab => unzip

File named PO1_A3 ... contains compiled code and data section in Motorola S-record format.

Remove lines before and after data section and with some Python scripts clean the data section.

import re
import argparse
import sys

def clean_file(path: str) -> None:
    try:
        with open(path, 'r', encoding='ansi') as f:
            text = f.read()
    except FileNotFoundError:
        print(f"File not found: {path}", file=sys.stderr)
        sys.exit(1)

    cleaned = re.sub(r'[^S0-9A-F\r\n]+', '', text)

    with open(path, 'w', encoding='ansi', newline='') as f:
        f.write(cleaned)

def main() -> None:
    parser = argparse.ArgumentParser(
        description='Keep characters S,0-9,A-F'
    )
    parser.add_argument('file', nargs='?', default='srec_section.txt', help='file to fix')
    args = parser.parse_args()

    clean_file(args.file)

if __name__ == '__main__':
    main()

 

with open('srec_section.txt', 'r', errors='ignore') as file:
    fc = file.read()
    fc = fc.replace('S', '\nS')
    with open('srec_section.s19', 'a') as f:
        f.write(fc) 

 

CPU is M16/60

Ghidra: