Error code: 4501 Wrong file.

[888pool]

Hi, I decrypted the original config file with the tool, edited the xml (added <Description val=“300Mbps Wireless N USB VDSL/ADSL Modem Routertelnetd -p 1023 -l login” /> ) and encrypt the config file again. but the webinterface reports wrong file. (Error code: 4501 Wrong file.) what i can do?

ps. i have also tryed with -s flag
python3 tpconf_bin_xml.py -l -s conf.xml newconf.bin
but always the same error

HardwareVersion val="Archer VR1210v v1 00000001"
SoftwareVersion val="2.0.0 0.10 v6041.0 Build 240220 Rel.12365n"