huawei was-tl10 imei repair on Sigma error A7C0DEAD

[rnsFLASH]

Connecting....
Android Adapter PCUI (COM72), Provider: HUAWEI Technologies CO.,LTD, Driver ver.: 1.0.26.0, Date: 18/05/2016, USB\Vid_12D1&Subclass_13&Prot_22
Testing external RAM...4 Gb
Detecting flash...eMMC, Flash size: 64 Gb
Firmware: NRD90M test-keys, Date: Wed Dec 6 03:36:31 CST 2017, Provider: hw/spcseas
Boot Version: Dallas-Trunk_BOOT, FastBoot Version: Chipset-dallas 5.1.0.1(0HR1)_FASTBOOT
Recovery Version: (unknow), System Version: System 5.1.0.63(13Z8)
WiFi address: 708A09596F87, Bluetooth address: 708A0959063B
Removing firmware protection...Skipped
Preparing....Error A7C0DEAD



i am facing this error on sigma
Any Solution PLZ???