G925F IMEI Repair Help


Can Anyone Help Me Please?

Code:

Operation: Write CERT
Selected model: SM-G925F
Software version: 27.7

Waiting ADB device... Ok
Reading phone info...
Model: SM-G925F
Android version: 6.0.1
Product code:
Phone version: G925FXXU4DPG2
PDA version: G925FXXU3DPBG
CSC version: G925FBTU3DPB1
CSC country code: UK & IRE
CSC sales code: BTU
HW version:
Phone SN:
Chip name: EXYNOS7420
Modem board: SHANNON333
RF cal date:
IMEI:
Checking Super user right... true
Reading NV data... Ok
Checking NV data... Ok
Initialization zTool... Ok
Running zTool, please wait... Ok
HWID:  A8 86 78 2E 95 06 00 00 00 00 00 00 00 00 00 00
Calculating... error
Security damaged (hmac mismatch)

Done with Samsung Tool PRO v.27.7