I didn't get the hengrui password and login_ft.cgi to work. You can access the the factory methods using the admin credentials by cgi (attached is an example of changing the colour to pink)
/ftdft.cgi
/ftlogo.cgi
/ftcolor.cgi
Here's a Python script that will validate and/or update the header sums for the update firmware (without changing the file size ie. in-place mods only)
There is also a serial password which is Switch321
EDIT: Adding more details to a repo in the coming days GitHub - up-n-atom/SWTG118AS: SWTG118AS and SWTG115AS RE
/ftdft.cgi
/ftlogo.cgi
/ftcolor.cgi
Here's a Python script that will validate and/or update the header sums for the update firmware (without changing the file size ie. in-place mods only)
Python:
import argparse
import mmap
import os
import struct
import sys
HEADER_LENGTH = 20
HEADER_MAGIC = 0x12345678
HEADER_RESERVED = 0x332255FF
PAYLOAD_LENGTH = 0x2ffe + 0x1000
def main() -> None:
parser = argparse.ArgumentParser(description='SWTG Update Firmware Checksum Calculator')
parser.add_argument('-u', '--update', help='Re-calculate sums', action='store_true')
parser.add_argument('firmware', type=argparse.FileType('r+b'))
args = parser.parse_args()
print_or_exit = print if args.update else sys.exit
with args.firmware as f:
with mmap.mmap(f.fileno(), 0) as mm:
header = bytearray(mm.read(HEADER_LENGTH))
magic, length, header_sum, payload_sum, reserved = struct.unpack('>5I', header)
print(f"magic: {magic:08x}",
f"length: {length:08x}",
f"header sum: {header_sum:08x}",
f"payload sum: {payload_sum:08x}",
f"reserved: {reserved:08x}",
header.hex(), sep='\n')
if magic != HEADER_MAGIC:
sys.exit('Invalid header magic')
if length + HEADER_LENGTH != mm.size():
sys.exit('Invalid header file length')
# Placeholder for the header sum
header[8:12] = b'\x00' * 4
if header_sum != sum(header):
print_or_exit('Invalid header checksum')
# Calculate payload sum...
calc_sum = sum(mm.read(PAYLOAD_LENGTH))
# Skip payload header
mm.seek(HEADER_LENGTH, os.SEEK_CUR)
# Placeholder for payload header sum
calc_sum += 0xff * HEADER_LENGTH
# Resume payload sum
calc_sum += sum(mm.read())
if calc_sum != payload_sum:
print_or_exit('Invalid payload checksum')
if args.update:
# Update the payload sum
header[12:16] = struct.pack('>I', calc_sum)
# Calculate and update the header sum
header[8:12] = struct.pack('>I', sum(header))
print(header.hex())
# Update headers
mm[:HEADER_LENGTH] = header
mm[PAYLOAD_LENGTH+HEADER_LENGTH:PAYLOAD_LENGTH+HEADER_LENGTH*2] = header
sys.exit(0)
if __name__ == '__main__':
main()EDIT: Adding more details to a repo in the coming days GitHub - up-n-atom/SWTG118AS: SWTG118AS and SWTG115AS RE
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