I got this message when I (Read bootloader code) on my huawei device:

[Danialkhan]

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Reading bootloader code...

unknown error (405)

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I have purchase 4 Credit for this and not this is not working

[Valdemaras]

Please provide device detect info.

[Danialkhan]

Please provide device detect info.

Detecting phone :

selection :
manufacturer - Huawei phones
model - Auto detect (recommended)

Found Applications port COM5

Model : Huawei HiSilicon Kirin Android phone
Serial NR. : 024CXT169X002033
Firmware : NRD90M test-keys

[Valdemaras]

Solved via live support chat. Your phone model is not supported.