We have updated firmware - please download it here - https://chiplesssolutions.com/download/WFC5710_FWG239TL_ZZ99Z9.zip
Upload firmware to printer in normal mode - dont put printer in Program Update mode.
The uploading process will stuck at 70-80% - it is ok!
Open task manager and stop updater process.
Printer will blink for about 5-15 minutes - then will power OFF.
Now power on the printer - chipless firmware is installed now in your printer!
Please reply about results.