when i use standard cable HUAWEI USB COM 1.0 (COM33), Provider: Huawei Incorporated, Driver ver.: 2.0.6.725, Date: 11/28/2016, USB\VID_12D1&PID_3609&REV_0100
HiSilicon: Kirin 710
Sending boot...Failed
with modified cable: SigmaPlus 1.00.01 HiSi: Remove Huawei ID
HUAWEI USB COM 1.0 (COM22), Provider: HUAWEI Incorporated, Driver ver.: 2.0.6.725, Date: 8/10/2014, USB\VID_12D1&PID_3609&REV_0100
The battery must be connected to the phone's board and fully charged. [YES]
HiSilicon: Kirin 710
Sending boot...Error writing to serial port
HiSilicon: Kirin 710
Sending boot...Failed
with modified cable: SigmaPlus 1.00.01 HiSi: Remove Huawei ID
HUAWEI USB COM 1.0 (COM22), Provider: HUAWEI Incorporated, Driver ver.: 2.0.6.725, Date: 8/10/2014, USB\VID_12D1&PID_3609&REV_0100
The battery must be connected to the phone's board and fully charged. [YES]
HiSilicon: Kirin 710
Sending boot...Error writing to serial port