request code for E5331s-1

[nnm]

hi,

i have a huawei modem e 3531s and tryied to unlock it but i could'nt.
I have followed step by step the instructions that i found here, for several times, and at the end always the message:
"send unlock command... Error"

the imei is: 862455029395194
and the codes i have got are:
Unlock: 41636081
flash: 41213093

please somebody help me to solve this problem.

Thanks in advance

imei: 862455029395194
flash code: 41213093
v1 algo unlock code: 41636081
v2 algo unlock code: 95689746
v3 algo unlock code: 15562308