honor 5x frp reset failed

1. Phone switched off
2. Enable fastboot mode
.....Connect Mobile with USB Cable
.....Hold Down_Key and Boot_Key
Connecting to Phone,Wait..ok
Being Get mobile info...
Model = NEM-L22
Build number = :NEM-L22C675B151
certify block = 5b71d629572c1893
Be Authorizing Unlock...
Failed,ErrorID:2
>>Sign certify data fail!