Huawei DRA IMEI repair failed

Y5 Lite 2018 / DRA-LX5
fail to repair imei

284516612 Sigma dongle 2.29, Initializing...OK
Pack 1: Activated
Pack 2: Activated
Pack 3: Activated
--------- 2019-01-23 17:34:01 ---------
SigmaKey 2.29.16 MTK: Repair IMEI (Huawei DRA-###)
Removing firmware protection.....OK
Baseband Processor:MT6739, HW Rev. B.00, SW Rev. 0.02
Testing external RAM...DRAM, 1 Gb
Detecting flash...eMMC, Flash size: 14.57 Gb
Phone model: HUAWEI DRA-LX5
Android 8.1.0
Firmware: "DRA-LX5-user 8.1.0 HUAWEIDRA-LX5 1.0.0.101(C16) release-keys"
Software IMEI: 866903040946996
Reading data...File I/O operation failed