Huawei Enjoy 9 DUB-AL20 read bootloader password failed

Tried many times but always failed


--------- 2019-10-05 17:00:21 ---------
SigmaKey 2.33.07 Qcom: Get Huawei bootloader password
DBAdapter Reserved Interface (COM272), Provider: Huawei Incorporated, Driver ver.: 2.0.6.725, Date: 11/28/2016, USB\Vid_12D1&Subclass_11&Prot_23
Removing firmware protection....Phone model: Qcom; DUB-AL20
Unfortunately, heuristic method have been failed.


Any solution?