Mate 10 ALP-L29 unbrick

Hi, have huawei mate 10 alp-l29 in bricked state after unsuccessful firmware.

do according gto this guide

How to repair your phone if there is no factory flash for your exact platform:

Select flash for other platform, but based on the same CPU (for example, factory flash file for EVA-AL10, EVA-L29… can be selected for EVA-L09)
Select profile “Don't flash” and flash the phone.
Bootloader will be downloaded, but nothing will be flashed.
Then use FLASH via fastboot mode and flash the update.app file that suits your phone’s platform
Repair Vendor/Coutry; IMEI and other numbers
To finalize repair operation flash your phone via UPGRADE MODE


download from bool-loader.com ALP-AL00A-BD 1.0.0.56.skf

open sigma, check don''t flash and click write firmware

and have this log

SigmaKey 2.33.07b3 HiSi: Write firmware
HUAWEI USB COM 1.0 (COM53), Provider: HUAWEI Incorporated, Driver ver.: 2.0.6.725, Date: 10.08.2014, USB\VID_12D1&PID_3609&REV_0100
Repairing...ALP-AL00A-BD 1.0.0.56.skf
Sending boot....Error B00720AA

what's wrong and what i must to do with this error?