mi mix 2 imei repair error ?

mi mix 2 imei repair error please help ?
android 7.1.1
miui8.5
i unlock bootloader
i root
i try to write qcn error
repair imei error


Operation : Repair IMEI
Searching for Device in FTM Mode...Not Found
Port : COM5 : Qualcomm HS-USB Android DIAG 901D (COM5)
Compile :
Release :
Hw. Ver. :
Software : ----
IMEI : 0000000000000000 / 0000000000000000
Reading QCN Data...Connection Failed!
Operation Failed.
QcFire Ver. 4.1

Operation : Restore QCN
Port : COM5 : Qualcomm HS-USB Android DIAG 901D (COM5)
Compile :
Release :
Hw. Ver. :
Software : ----
IMEI : 0000000000000000 / 0000000000000000
QCN Backup : C:\Users\gsmiulian\Desktop\New folder (2)\mix 2\mix 2\mix .qcn
Restoring QCN Data...Connection Failed!
Operation Failed.
QcFire Ver. 4.1


Device : Xiaomi Mix
Operation : Full Reset EFS
Checking for existing devices...Found
Port : Qualcomm HS-USB QDLoader 9008 (COM6)
Driver Info : HS Corporation, ghsser.sys, 10.2104.1.2
Opening Port...OK
Init Handshake Sequence...OK
Hardware ID : E1E00500 [8998] 00000000
OPK_DATA : F7337FE47B192EF4D1BA34CB4E879F0C6B771D06D2DE87BF21 F65BA3303834E1
Initializing Protocol...OK
Using Auto Loader Selection [1]
Preparing Loader...Done
Sending Loader [8998_002]...Done
Executing Loader...OK
Detecting Chip Type...OK
Hardware : MSM8996, UFS, 64 GB
LU Count : 6 [0x00D40800] [0x00000800] [0x00000800] [0x00008000] [0x00194000] [0x00008000]
Payload Info : In: 262144 [4096], Out: 131072, Sector Size: 4096
Reading Partition Table...OK
Reading Device Information...OK
Device : Xiaomi Mi MIX 2 [msm8998]
Software : NMF26X, V8.5.1.0.NDEMIEF [Mon Sep 25 20:05:01 CST 2017]
Android Ver. : 7.1.1
Patch Level : 2017-09-01
Saving EFS Backup.......OK
EFS Backup : EFS_Xiaomi_Mi MIX 2_NMF26X_2017-09-01_190516_121718.ueb
Reset EFS (Full)......Done
Operation Finished.
QcFire Ver. 4.1

Port : COM3 : TOSHIBA Software Modem
Baud Rate : 921600
Device : Qualcomm Android
Operation : Write IMEI [UMT Method [2]]
Opening Port... OK
Reading Phone Information... Failed
Port Closed.
Operation Failed.
Elapsed Time: 00:05
[Module Ver. 5.2]
Log Saved to Logs\190516_122148.log

Port : COM5 : Qualcomm HS-USB Android DIAG 901D (COM5)
Baud Rate : 921600
Device : Qualcomm Android
Operation : Write IMEI [QCOM Advance]
Opening Port... OK
Reading Phone Information... Failed
Port Closed.
Operation Failed.
Elapsed Time: 00:05
[Module Ver. 5.2]
Log Saved to Logs\190516_122739.log

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