imei nul note3 n900 how to repair Please


Welcome to Octoplus/Octopus Box Samsung software version 2.2.3
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To connect SM-N900 phone you have to perform the following steps:
1. Disconnect USB cable from phone.
2. Go to Menu->Settings->More->About Device.
3.Tap on "Build number" 7 times to enable developer options.
4. Go to Menu->Settings->More->Developer options.
5. Turn on "USB Debugging" option.
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Platform: Samsung Android
Selected port: COM20
Selected model: SM-N900
Searching for a phone. Please wait…
ADB server killed.
Phone found.
Firmware compiled date: Fri Dec 18 00:53:07 KST 2015
PDA version: N900XXUEBOL2
CSC version: N900OJVEBOL1
SW version: Unknown
Phone IMEI: Unknown
Phone SN: RF1D96R0VSE
Android version: 5.0 (LRX21V)
Performed by 2.2.3 software version
———————————————————————————–
Platform: Samsung Android
Selected port: COM20
Selected model: SM-N900
Detected phone model: SM-N900
Firmware compiled date: Fri Dec 18 00:53:07 KST 2015
PDA version: N900XXUEBOL2
CSC version: N900OJVEBOL1
SW version: Unknown
Phone SN: RF1D96R0VSE
Android version: 5.0 (LRX21V)
Checking Root:
Phone is not Rooted.
Write IMEI failed
Performed by 2.2.3 software version
———————————————————————————–
Platform: Samsung Android
Selected port: COM20
Selected model: SM-N900
Please, press "OK" button on the phone to allow USB debugging..
Proper android device not found. Make shure that "USB debug" option
on the device is turned on.
Write IMEI failed
Performed by 2.2.3 software version
———————————————————————————–
Platform: Samsung Android
Selected port: COM20
Selected model: SM-N900
Please, press "OK" button on the phone to allow USB debugging..
Proper android device not found. Make shure that "USB debug" option
on the device is turned on.
Write IMEI failed
Performed by 2.2.3 software version
———————————————————————————–
Platform: Samsung Android
Selected port: COM20
Selected model: SM-N900
Please, press "OK" button on the phone to allow USB debugging..
Proper android device not found. Make shure that "USB debug" option
on the device is turned on.
Write IMEI failed
Performed by 2.2.3 software version
———————————————————————————–
Platform: Samsung Android
Selected port: COM20
Selected model: SM-N900
Please, press "OK" button on the phone to allow USB debugging..
Proper android device not found. Make shure that "USB debug" option
on the device is turned on.
Write IMEI failed
Performed by 2.2.3 software version
———————————————————————————–
Platform: Samsung Android
Selected port: COM20
Selected model: SM-N900
Detected phone model: SM-N900
Firmware compiled date: Fri Dec 18 00:53:07 KST 2015
PDA version: N900XXUEBOL2
CSC version: N900OJVEBOL1
SW version: Unknown
Phone SN: RF1D96R0VSE
Android version: 5.0 (LRX21V)
Checking Root:
Phone is Rooted.
Reading security backup, please wait…
Phone will restart now. Please don’t disconnect cable!
After phone being rebooted and powered on perform the following
steps:
1. Disconnect USB cable.
2. Wait for 1-2 minutes.
3. Connect phone via UART cable to the Box.
4. Note: phone screen must be active
Connecting to phone, please wait…
IMEI successfully repaired.
To finish the operation, please restart the phone via phone’s menu.
Performed by 2.2.3 software version

i have change imei succse but not done