Thanks adfree!
I flashen with EF81_IP17.0.16_de-BRDHandel-std_58_0147_3GSwupFU_SGLPK.exe
This time underneath Rename and replaced in C:\Program Files\BenQ\3GSwupFU folder template_EF81.brt: 3589810010xxxxx.brt
After flashen with EF81_IP15.0.1_xx-International-LG04_48_0113_3GSwupFU_SGLPK.exe (besacue of LP04 )
this time for fine seem
after that we'll see about us