Hardware version: CL2E5770SM
Software version: 21.200.19.01.405
Web UI version: 17.100.11.05.405
Grab this firmware:
ftp://serv.valdikss.org.ru/Download...21.200.19.01.405_to_21.180.99.10.00_signed.7z
And read readme inside the archive of modified firmware.